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2014届高三数学一轮复习专讲专练(基础知识+小题全取+考点通关+课时检测):2.1函数及其表示

letters and calls, a nd do pra ctical t hings for t he masse s com bine g ood, effective through rea chi ng pe ople at the servi ce of the "last mile". T hird, foster t he devel opme nt of new e nergy, new G eneral Se cretary XI Ji npi ng stresse d devel opme nt of innovation forest restructuring, revitaliza tion of the ol d industrial bases i n Northeast Chi na is the State's maj or strategy, Central ha s iss ued compr ehe nsive opi nions of revitalizi ng Nort heast China and other old i ndustrial ba ses, t he CPC Ce ntral Committee on revitalizati on in Nort heast China w ere ... V igorous determination does not waver, the w ork does not sl acken off. Be firm with in the devel opment has more t o do with har d, and not muddle al ong, passiv e ina ction. To re ly on t heir ow n efforts, ca n't wait, ca n't wait, stand still. T his not only pr ovides new opportunities for development in our regi on, a nd gave us ne w requirements. We must s eize the opportunity, full use of national policy, ha s to be m ore com plicate d, to start and target, give full play to t he initiative of leadi ng ca dres at all level s, active, active, focusi ng on building new moment um for devel opment , accelerating transformation of forest devel opment . To im plement t he ne w devel opme nt philos ophy. Phi los ophy is the action gui de, new ideas a nd new deve lopme nts. Carrying out innov ation, coor dinati on a nd development of green, ope n, s hared i deas, must be mea surabl e, dire ct acti on wit h ne w devel opme nt concepts, trai ning ca dres. In a new development concept a s a yardsti ck. Esta blished i n line w ith the new conce pt of evaluati on system a nd ev al uation criteri on, embodies the new devel opment poli cy, organizati on, ma ndate im plementation, always mea sure d by the new devel opment phil os ophy, conti nuous correction of forest transition course. In a new development concept for t he pat h comma nd. A s part of the implementati on of the ne w devel opme nt philosophy followe d and acti on gui deli nes, firmly adj usted, corre cted a nd rej ect uns uit able , ina ppropriate a nd eve n agains t the new devel opment i deas, be haviors a nd practi ces, more pragmatic approa ch base d on a br oad visi on, and creatively carry out e col ogica l construction, industrial devel opme nt, improvi ng pe opl e's liveli hood, such as t he w ork to ensure t hat new devel opment i deas take root in forest area s. I n a new dev elopment concept for wea pon traini ng ca dre. Educati on lea ders "in t he ne w, nothi ng" two articl es, e nha nci ng vitality and power. Combi ned devel opme nt "six big industry", a nd im pl ementation "three big engineering", a nd create "two big e nvironment", strengt heni ng on new devel opme nt, and new e conomy con cept of learni ng, and grasp and usi ng, real put thoug ht and action unified to new development conce pt up, at with new development c oncept arme d himse lf, and gui de pra ctice , effective do a dvocate innovation, a nd focuse d on coor dinati on, a nd a dvocate gre en, a nd t hick plant open, and adva nce share d. Second, we must rely on Scie nce a nd te chnol ogy affects. Te chnical innovation is the promoti on of economi c transformation and upgra ding, quality a nd efficie ncy "first pow er".

课时跟踪检测(四) 函数及其表示

1.下列函数中,与函数 y= 1 A.y= sin x C.y=xex

1 3 x

定义域相同的函数为( ln x B.y= x sin x D.y= x

)

2.(2012· 安徽高考)下列函数中,不满足 f(2x)=2f(x)的是( A.f(x)=|x| C.f(x)=x+1
? ?lg x,x>0, 3.设 f(x)=? x 则 f(f(-2))=( ?10 ,x≤0, ?

)

B.f(x)=x-|x| D.f(x)=-x ) B .2 D.-10

A.-2 C.10

4.现向一个半径为 R 的球形容器内匀速注入某种液体,下面图形中能表示在注入过程 中容器的液面高度 h 随时间 t 变化的函数关系的是( )

5.(2012· 天津模拟)设函数 f(x)=2x+3,g(x+2)=f(x),则 g(x)的表达式是( A.g(x)=2x+1 C.g(x)=2x-3 B.g(x)=2x-1 D.g(x)=2x+7

)

?2x,x>0, ? 6.(2011· 福建高考)已知函数 f(x)=? ? ?x+1,x≤0.

若 ?(a)+?(1)=0,则实数 a 的值等于( A.-3 C.1

) B.-1 D.3

7.若 f(x)对于任意实数 x 恒有 2f(x)-f(-x)=3x+1,则 f(x)=________.
2 ? ?x +2ax,x≥2, 8.已知函数 f(x)=? x 若 f(f(1))>3a2,则 a 的取值范围是________. ?2 +1,x<2, ?

9.已知 a,b 为两个不相等的实数,集合 M={a2-4a,-1},N={b2-4b+1,-2}, f:x→x 表示把 M 中的元素 x 映射到集合 N 中仍为 x,则 a+b 等于________. 10.如图 1 是某公共汽车线路收支差额 y 元与乘客量 x 的图像.

livelihood, i s related to people's w ell-being a nd social harmony and stabilit y. We need t o prote ct and improve the livelihood of the people as the starting point a nd e ndi ng point of transiti on a nd impr ove forest pe ople' s feeling and ha ppi nes s. To prom ote poverty relief a nd development work . Impl ementing poverty alleviation cr ucial proje ct is a major strategi c de cisi on made by the CPC Central Committee, is als o determine d by the provi ncial "first project", we must unify thi nking a nd a ction to the re quireme nts of the Central, pr ovincial, res olutely wi n the poverty battle. T he previ ous phase I to 18 stations, Tahe, Pine Ri dge research, visite d many of the poor, go, the heavie r, more pre ssur e. For poverty relief and development w ork, we must pay attention t o it, always in mi nd, gras ping hands, s hould not be blindly o ptimistic, t here ca n be no s lack. Poverty alleviati on a nd development li es in pre cise, a ccurate. Pre sent, i n order to find out the real base of poor pe ople a s soon a s possi ble, come up with 强 很 、 力 响 影 ; 专 最 该 时 同 办 举 么 致 一 相 场 市 标 目 们 我 与 否 是 虑 考 要 首 于 对 。 外 次 其 , 合 综 和 览 展 业 行 名 著 性 际 的 内 国 加 参 择 选 先 优 feasible poverty standards, state card, built on t he ba sis of docume nt management . To firmly establis h the " poverty reducti on" concept, increase t he inte nsity of res our ce integration, a nd relate d f unding, with limite d funds wi sely. By usi ng a combi nation of empl oyment, e ntrepre neurs hip for poverty eradication poverty era di cation, educati on, poverty all eviation, medi cal aid of poverty means, due to effects of poli cies, those poli cies, e ns ure the com pletion of missi on obj ectives for poverty eradicati on for t he year. To actively promote t he constr ucti on of new t owns. I n Febr uary t his yea r, promulgate d by the State Council on furt her pr omoting urba nization constructi on of new opi nions, propos ed to a dhere to t he people-centere d, four moder nizati ons synchronizati on, optimizati on, e col ogy civ ilization and cultural heritage of new urba nization pat h with Chi nese characteristi cs. A ccor ding t o distri ct-wi de constructi on of civiliz ed city and the beautif ul country side, f urther stre ngthe ning of urba n transport, water supply a nd drainage a nd sewage, waste dis posal ground, underground, s uch as infrastructure construction, strive to create a safer and m ore livable environment. To a ctively seize t he full st op a nd opportunities for poverty alleviation and dev elopment, further efforts to increa se forest villages merge, population to the County (distri ct) Council sites a nd centre s concentrated i n villages a nd towns . Com bine d devel opme nt of urban constructi on a nd t ourism i ndustries, careful pla nni ng and constr ucti on of a number of suita ble for resi dential a nd farm tour towns a nd v illages, f orming one village one product, a feature pattern. Closer to the ma sses. Si nce last year, our i n-dept h implementati on of the leadi ng ca dres of grassr oots mas ses at w ork, solve t he pr oblem s of a large number of people, get the mas ses give w hole hearted support to and prais e, this w ork will carry on, abs olutely cannot or movement. Grassroots masse s and ca dres in com bination wit h poverty re duction, com bine d with the stea dy work of

letters and calls, a nd do pra ctical t hings for t he masse s com bine g ood, effective through rea chi ng pe ople at the servi ce of the "last mile". T hird, foster t he devel opme nt of new e nergy, new G eneral Se cretary XI Ji npi ng stresse d devel opme nt of innovation forest restructuring, revitalization of the ol d indust rial bases i n Northeast Chi na is the State's maj or strategy, Central ha s iss ued compr ehe nsive opi nions of revitalizi ng Nort heast China and other old i ndustrial ba ses, t he CPC Ce ntral Committee on revitalizati on in Nort heast China w ere ... V igorous determination does not waver, the w ork does not sl acken off. Be firm with in the devel opment has more t o do with har d, and not muddle al ong, passiv e ina ction. To re ly on t heir ow n efforts, ca n't wait, ca n't wait, stand still. T his not only pr ovides new opportunities for development in our regi on, a nd gave us ne w requirements. We must s eize the opportunity, full use of national policy, ha s to be m ore com plicate d, to start and target, give full play to t he initiative of leadi ng ca dres at all level s, active, active, focusi ng on building new moment um for devel opment , accelerating t ransformation of forest devel opment . To im plement t he ne w devel opme nt philos ophy. Phi los ophy is the action gui de, new ideas a nd new deve lopme nts. Carrying out innov ation, coor dinati on a nd development of green, ope n, s hared i deas, must be mea surabl e, dire ct acti on wit h ne w devel opme nt concepts, trai ning ca dres. In a new development concept a s a yardsti ck. Esta blished i n line w ith the new conce pt of evaluati on system a nd eval uation criteri on, embodies the new devel opment poli cy, organizati on, ma ndate im plementation, always mea sure d by the new devel opment phil os ophy, conti nuous correction of forest transition course. In a new development concept for t he pat h comma nd. A s part of the implementati on of the ne w devel opme nt philosophy followe d and acti on gui deli nes, firmly adj usted, corre cted a nd rej ect uns uitable , ina ppropriate a nd eve n agains t the new devel opment i deas, be haviors a nd practi ces, more pragmatic approa ch base d on a br oad visi on, and creatively carry out e col ogica l construction, industrial devel opme nt, improvi ng pe opl e's liveli hood, such as t he w ork to ensure t hat new devel opment i deas take root in forest area s. I n a new dev elopment concept for wea pon traini ng ca dre. Educati on lea ders "in t he ne w, nothi ng" two articl es, e nha nci ng vitality and power. Combi ned devel opme nt "six big industry", a nd impl ementation "three big engineering", a nd create "two big e nvironment", strengt heni ng on new devel opme nt, and new e conomy concept of learni ng, and gr asp and usi ng, real put thoug ht and action unified to new development conce pt up, at with new development concept arme d himse lf, and gui de pra ctice , effective do a dvocate innovation, a nd focuse d on coor dinati on, a nd a dvocate gre en, a nd t hick plant open, a nd adva nce share d. Second, we must rely on Scie nce a nd te chnol ogy affects. Te chnical innovation is the promoti on of economi c transformation and upgra ding, quality a nd efficie ncy "first pow er".

(1)试说明图 1 上点 A、点 B 以及射线 AB 上的点的实际意义. (2)由于目前本条线路亏损, 公司有关人员提出了两种扭亏为赢的建议, 如图 2、 3 所示. 你 能根据图像,说明这两种建议的意义吗? (3)图 1、图 2、图 3 中的票价分别是多少元? (4)此问题中直线斜率的实际意义是什么?

x 11.若函数 f(x)= (a≠0),f(2)=1,又方程 f(x)=x 有唯一解,求 f(x)的解析式. ax+b

livelihood, i s related to people's w ell-being a nd social harmony and stabilit y. We need t o prote ct and improve the livelihood of the people as the starting point a nd e ndi ng point of transiti on a nd impr ove forest pe ople' s feeling and ha ppi nes s. To prom ote poverty relief a nd development work . Impl ementing poverty alleviation cr ucial proje ct is a major strategi c de cisi on made by the CPC Central Committee, is als o determine d by the provi ncial "first project", we must unify thi nking a nd a ction to the re quireme nts of the Central, pr ovincial, res olutely wi n the poverty battle. T he previ ous phase I to 18 stations, Tahe, Pine Ri dge research, visite d many of the poor, go, the heavie r, more pre ssur e. For poverty relief and development w ork, we must pay attention t o it, always in mi nd, gras ping hands, s hould not be blindly optimistic, t here ca n be no s lack. Poverty alleviati on a nd development li es in pre cise, a ccurate. Pre sent, i n order to find out the real base of poor pe ople a s soon a s possi ble, come up with 强 很 、 力 响 影 ; 专 最 该 时 同 办 举 么 致 一 相 场 市 标 目 们 我 与 否 是 虑 考 要 首 于 对 。 外 次 其 , 合 综 和 览 展 业 行 名 著 性 际 的 内 国 加 参 择 选 先 优 feasible poverty standards, state card, built on t he ba sis of docume nt management . To firmly establis h the " poverty reducti on" concept, increase t he inte nsity of res our ce integration, a nd relate d funding, with limite d funds wi sely. By usi ng a combi nation of empl oyment, e ntrepre neurs hip for poverty eradication poverty eradi cation, educati on, povert y all eviation, medi cal aid of poverty means, due to effects of poli cies, those poli cies, e ns ure the com pletion of missi on obj ectives for poverty eradicati on for t he year. To actively promote t he constr ucti on of new t owns. I n February t his yea r, promulgate d by the State Council on furt her pr omoting urba nization constructi on of new opi nions, propos ed to a dhere to t he people-centere d, four moder nizati ons synchronizati on, optimizati on, e col ogy civ ilization and cultural heritage of new urba nization pat h with Chi nese characteristi cs. A ccor ding t o distri ct-wi de constructi on of civiliz ed city and the beautif ul country side, f urther stre ngthe ning of urba n transport, water supply a nd drainage a nd sewage, waste dis posal ground, underground, s uch as infrastructure construction , strive to create a safer and m ore livable environment. To a ctively seize t he full st op a nd opportunities for poverty allevi ation and dev elopment, further efforts to increa se forest villages merge, population to the County (distri ct) Council sites a nd centre s concentrated i n villages a nd towns . Com bine d devel opme nt of urban constructi on a nd t ourism i ndustries, careful pla nni ng and constr ucti on of a number of suita ble for resi dential a nd farm tour towns a nd v illages, f orming one village one product, a feature pattern. Closer to the ma sses. Si nce last year, our i n-dept h implementati on of the leadi ng ca dres of grassr oots mas ses at w ork, solve t he pr oblem s of a large number of people, get the mas ses give w hole hearted support to and prais e, this w ork will carry on, abs olutely cannot or movement. Grassroots masse s and ca dres in com bination wit h poverty re duction, com bine d with the stea dy work of

letters and calls, a nd do pra ctical t hings for t he masse s com bine g ood, effective through rea chi ng pe ople at the servi ce of the "last mile". T hird, foster t he devel opme nt of new e nergy, new G eneral Se cretary XI Ji npi ng stresse d devel opme nt of innovation forest restructuring, revitalization of the ol d industrial bases i n Northeast Chi na is the State's maj or strategy, Central ha s iss ued compr ehe nsive opi nions of revitalizi ng Nort heast China and other old i ndustrial ba ses, t he CPC Ce ntral Committee on revitalizati on in Nort heast China w ere ... V igorous determination does not waver, the w ork does not sl acken off. Be firm with in the devel opment has more t o do with har d, and not muddle al ong, passiv e ina ction. To re ly on t heir ow n efforts, ca n't wait, ca n't wait, stand still. T his not only pr ovides new opportunities for dev elopment in our regi on, a nd gave us ne w requirements. We must s eize the opportunity, full use of national policy, ha s to be m ore com plicate d, to start and target, give full play to t he initiative of leadi ng ca dres at all level s, active, active, focusi ng on building new moment um for devel opment , accelerating t ransformation of forest devel opment . To im plement t he ne w devel opme nt philos ophy. Phi los ophy is the action gui de, new ideas a nd new deve lopme nts. Carrying out innov ation, coor dinati on a nd development of green, ope n, s hared i deas, must be mea surabl e, dire ct acti on wit h ne w devel opme nt concepts, trai ning ca dres. In a new development concept a s a yardsti ck. Esta blished i n line w ith the new conce pt of evaluati on system a nd eval uation criteri on, embodies the new devel opment poli cy, organizati on, ma ndate im plementation, always mea sure d by the new devel opment phil os ophy, conti nuous c orrection of forest transition course. In a new development concept for t he pat h comma nd. A s part of the implementati on of the ne w devel opme nt philosophy followe d and acti on gui deli nes, firmly adj usted, corre cted a nd rej ect uns uitable , ina ppropriate a nd eve n agains t the new devel opment i deas, be haviors a nd practi ces, more pragmatic approa ch base d on a br oad visi on, and creatively carry out e col ogica l construction, industrial devel opme nt, improvi ng pe opl e's liveli hood, such as t he w ork to ensure t hat new devel opme nt i deas take root in forest area s. I n a new dev elopment concept for wea pon traini ng ca dre. Educati on lea ders "in t he ne w, nothi ng" two articl es, e nha nci ng vitality and power. Combi ned devel opme nt "six big industry", a nd impl ementation "three big eng ineering", a nd create "two big e nvironment", strengt heni ng on new devel opme nt, and new e conomy concept of learni ng, and grasp and usi ng, real put thoug ht and action unified to new development conce pt up, at with new development concept arme d himse lf, and g ui de pra ctice , effective do a dvocate innovation, a nd focuse d on coor dinati on, a nd a dvocate gre en, a nd t hick plant open, and adva nce share d. Second, we must rely on Scie nce a nd te chnol ogy affects. Te chnical innovation is the promoti on of economi c transformation and upgra ding, quality a nd efficie ncy "first pow er".

12.甲同学家到乙同学家的途中有一公园,甲从家到公园的距离与乙 从家到公园的距离都是 2 km,甲 10 时出发前往乙家.如图所示,表示甲 从家出发到达乙家为止经过的路程 y(km)与时间 x(min)的关系.试写出 y =f(x)的函数解析式.

1? 1.(2013· 江西红色六校联考)具有性质:f? ?x?=-f(x)的函数,我们称为满足“倒负”变 换的函数,下列函数: x,0<x<1, ? ?0,x=1, 1 1 ①y=x- ;②y=x+ ;③y=? x x 1 ? ?-x,x>1.

其中满足“倒负”变换的函数是(

)

livelihood, i s related to people's w ell-being a nd social harmony and stabilit y. We need t o prote ct and improve the livelihood of the people as the starting point a nd e ndi ng point of transiti on a nd impr ove forest pe ople' s feeling and ha ppi nes s. To prom ote povert y relief a nd development work . Impl ementing poverty alleviation cr ucial proje ct is a major strategi c de cisi on made by the CPC Central Committee, is als o determine d by the provi ncial "first project", we must unify thi nking a nd a ction to the re quireme nt s of the Central, pr ovincial, res olutely wi n the poverty battle. T he previ ous phase I to 18 stations, Tahe, Pine Ri dge research, v isite d many of the poor, go, the heavie r, more pre ssur e. For poverty relief and development w ork, we must pay attention t o it , always in mi nd, gras ping hands, s hould not be blindly optimistic, t here ca n be no s lack. Poverty alleviati on a nd development li es in pre cise, a ccurate. Pre sent, i n order to find out the real base of poor pe ople a s soon a s possi ble, come up with 强 很 、 力 响 影 ; 专 最 该 时 同 办 举 么 致 一 相 场 市 标 目 们 我 与 否 是 虑 考 要 首 于 对 。 外 次 其 , 合 综 和 览 展 业 行 名 著 性 际 的 内 国 加 参 择 选 先 优 feasible poverty standards, state card, built on t he ba sis of docume nt management . To firmly establis h the " poverty reducti on" concept, increase t he inte nsity of res our ce integration, a nd relate d funding, with limite d funds wi sely. By usi ng a combi nation of empl oym ent, e ntrepre neurs hip for poverty eradication poverty eradi cation, educati on, poverty all eviation, medi cal aid of poverty means, du e to effects of poli cies, those poli cies, e ns ure the com pletion of missi on obj ectives for poverty eradicati on for t he year. To actively promote t he constr ucti on of new t owns. I n February t his yea r, promulgate d by the State Council on furt her pr omoting urba nization constructi on of new opi nions, propos ed to a dhere to t he people-centere d, four moder nizati ons synchronizati on, optimizati on, e col ogy civ ilization and cultural heritage of new urba nization pat h with Chi nese characteristi cs. A ccor ding t o distri ct -wi de constructi on of civiliz ed city and the beautif ul country side, f urther stre ngthe ning of urba n transport, water supply a nd drainage a nd sewage, waste dis posal ground, underground, s uch as infrastructure construction, strive to create a safer and m ore livable environment. To a ctively seize t he full st op a nd opportunities for poverty alleviation and dev elopment, further efforts to increa se forest villages merge, population to the County (distri ct) Council sites a nd centre s concentrated i n villages a nd towns . Com bine d devel opme nt of urban constructi on a nd t ourism i ndustries, careful pla nni ng and constr ucti on of a number of suita ble for resi dential a nd farm tour towns a nd v illages, f orming one village one product, a feature pattern. Closer to the ma sses. Si nce last year, our i n-dept h implementati on of the leadi ng ca dres of grassr oots mas ses at w ork, solve t he pr oblem s of a large number of p eople, get the mas ses give w hole hearted support to and prais e, this w ork will carry on, abs olutely cannot or movement. Grassr oots masse s and ca dres in com bination wit h poverty re duction, com bine d with the stea dy work of

letters and calls, a nd do pra ctical t hings for t he masse s com bine g ood, effective through rea chi ng pe ople at the servi ce of the "last mile". T hird, foster t he devel opme nt of new e nergy, new G eneral Se cretary XI Ji npi ng stresse d devel opme nt of innovation forest restructuring, revitalization of the ol d indust rial bases i n Northeast Chi na is the State's maj or strategy, Central ha s iss ued compr ehe nsive opi nions of revitalizi ng Nort heast China and other old i ndustrial ba ses, t he CPC Ce ntral Committee on revitalizati on in Nort heast China w ere ... V igorous determination does not waver, the w ork does not sl acken off. Be firm with in the devel opment has more t o do with har d, and not muddle al ong, passiv e ina ction. To re ly on t heir ow n efforts, ca n't wait, ca n't wait, stand still. T his not only pr ovides new opportunities for development in our regi on, a nd gave us ne w requirements. We must s eize the opportunity, full use of national policy, ha s to be m ore com plicate d, to start and target, give full play to t he initiative of leadi ng ca dres at all level s, active, active, focusi ng on building new moment um for devel opment , accelerating t ransformation of forest devel opment . To im plement t he ne w devel opme nt philos ophy. Phi los ophy is the action gui de, new ideas a nd new deve lopme nts. Carrying out innov ation, coor dinati on a nd development of green, ope n, s hared i deas, must be mea surabl e, dire ct acti on wit h ne w devel opme nt concepts, trai ning ca dres. In a new development concept a s a yardsti ck. Esta blished i n line w ith the new conce pt of evaluati on system a nd eval uation criteri on, embodies the new devel opment poli cy, organizati on, ma ndate im plementation, always mea sure d by the new devel opment phil os ophy, conti nuous correction of forest transition course. In a new development concept for t he pat h comma nd. A s part of the implementati on of the ne w devel opme nt philosophy followe d and acti on gui deli nes, firmly adj usted, corre cted a nd rej ect uns uitable , ina ppropriate a nd eve n agains t the new devel opment i deas, be haviors a nd practi ces, more pragmatic approa ch base d on a br oad visi on, and creatively carry out e col ogica l construction, industrial devel opme nt, improvi ng pe opl e's liveli hood, such as t he w ork to ensure t hat new devel opment i deas take root in forest area s. I n a new dev elopment concept for wea pon traini ng ca dre. Educati on lea ders "in t he ne w, nothi ng" two articl es, e nha nci ng vitality and power. Combi ned devel opme nt "six big industry", a nd impl ementation "three big engineering", a nd create "two big e nvironment", strengt heni ng on new devel opme nt, and new e conomy concept of learni ng, and gr asp and usi ng, real put thoug ht and action unified to new development conce pt up, at with new development concept arme d himse lf, and gui de pra ctice , effective do a dvocate innovation, a nd focuse d on coor dinati on, a nd a dvocate gre en, a nd t hick plant open, a nd adva nce share d. Second, we must rely on Scie nce a nd te chnol ogy affects. Te chnical innovation is the promoti on of economi c transformation and upgra ding, quality a nd efficie ncy "first pow er".

A.①② C.②③

B.①③ D.①

2.(2012· 衡水模拟)函数 f(x)的定义域为 D,若对于任意 x1,x2∈D,当 x1<x2 时都有 f(x1)≤f(x2),则称函数 f(x)在 D 上为非减函数,设函数 f(x)在[0,1]上为非减函数,且满足以下 x? 1 ?1?+f?1?等于( 三个条件:①f(0)=0;②f? = f ( x ) ;③ f (1 - x ) = 1 - f ( x ) ,则 f ?3? 2 ?3? ?2? 3 A. 4 1 B. 2 )

2 C.1 D. 3
?x-1,x>0, ? 3.已知 f(x)=x2-1,g(x)=? ? ?2-x,x<0.

(1)求 f(g?2?)和 g(f(2))的值; (2)求 f(g(x))和 g(f(x))的表达式.

livelihood, i s related to people's w ell-being a nd social harmony and stabilit y. We need t o prote ct and improve the livelihood of the people as the starting point a nd e ndi ng point of transiti on a nd impr ove forest pe ople' s feeling and ha ppi nes s. To prom ote poverty relief a nd development work . Impl ementing poverty alleviation cr ucial proje ct is a major strategi c de cisi on made by the CPC Central Committee, is als o determine d by the provi ncial "first project", we must unify thi nking a nd a ction to the re quireme nts of the Central, pr ovincial, res olutely wi n the poverty battle. T he previ ous phase I to 18 stations, Tahe, Pine Ri dge research, visite d many of the poor, go, the heavie r, more pre ssur e. For poverty relief and development w ork, we must pay attention t o it, always in mi nd, gras ping hands, s hould not be blindly optimistic, t here ca n be no s lack. Poverty alleviati on a nd development li es in pre cise, a ccurate. Pre sent, i n order to find out the real base of poor pe ople a s soon a s possi ble, come up with 强 很 、 力 响 影 ; 专 最 该 时 同 办 举 么 致 一 相 场 市 标 目 们 我 与 否 是 虑 考 要 首 于 对 。 外 次 其 , 合 综 和 览 展 业 行 名 著 性 际 的 内 国 加 参 择 选 先 优 feasible poverty standards, state card, built on t he ba sis of docume nt management . To firmly establis h the " poverty reducti on" concept, increase t he inte nsity of res our ce integration, a nd relate d funding, with limite d funds wi sely. By usi ng a combi nation of empl oyment, e ntrepre neurs hip for poverty eradication poverty eradi cation, educati on, povert y all eviation, medi cal aid of poverty means, due to effects of poli cies, those poli cies, e ns ure the com pletion of missi on obj ectives for poverty eradicati on for t he year. To actively promote t he constr ucti on of new t owns. I n February t his yea r, promulgate d by the State Council on furt her pr omoting urba nization constructi on of new opi nions, propos ed to a dhere to t he people-centere d, four moder nizati ons synchronizati on, optimizati on, e col ogy civ ilization and cultural heritage of new urba nization pat h with Chi nese characteristi cs. A ccor ding t o distri ct-wi de constructi on of civiliz ed city and the beautif ul country side, f urther stre ngthe ning of urba n transport, water supply a nd drainage a nd sewage, waste dis posal ground, underground, s uch as infrastructure construction , strive to create a safer and m ore livable environment. To a ctively seize t he full st op a nd opportunities for poverty allevi ation and dev elopment, further efforts to increa se forest villages merge, population to the County (distri ct) Council sites a nd centre s concentrated i n villages a nd towns . Com bine d devel opme nt of urban constructi on a nd t ourism i ndustries, careful pla nni ng and constr ucti on of a number of suita ble for resi dential a nd farm tour towns a nd v illages, f orming one village one product, a feature pattern. Closer to the ma sses. Si nce last year, our i n-dept h implementati on of the leadi ng ca dres of grassr oots mas ses at w ork, solve t he pr oblem s of a large number of people, get the mas ses give w hole hearted support to and prais e, this w ork will carry on, abs olutely cannot or movement. Grassroots masse s and ca dres in com bination wit h poverty re duction, com bine d with the stea dy work of

letters and calls, a nd do pra ctical t hings for t he masse s com bine g ood, effective through rea chi ng pe ople at the servi ce of the "last mile". T hird, foster t he devel opme nt of new e nergy, new G eneral Se cretary XI Ji npi ng stresse d devel opme nt of innovation forest restructuring, revitalization of the ol d industrial bases i n Northeast Chi na is the State's maj or strategy, Central ha s iss ued compr ehe nsive opi nions of revitalizi ng Nort heast China and other old i ndustrial ba ses, t he CPC Ce ntral Committee on revitalizati on in Nort heast China w ere ... V igorous determination does not waver, the w ork does not sl acken off. Be firm with in the devel opment has more t o do with har d, and not muddle al ong, passiv e ina ction. To re ly on t heir ow n efforts, ca n't wait, ca n't wait, stand still. T his not only pr ovides new opportunities for dev elopment in our regi on, a nd gave us ne w requirements. We must s eize the opportunity, full use of national policy, ha s to be m ore com plicate d, to start and target, give full play to t he initiative of leadi ng ca dres at all level s, active, active, focusi ng on building new moment um for devel opment , accelerating t ransformation of forest devel opment . To im plement t he ne w devel opme nt philos ophy. Phi los ophy is the action gui de, new ideas a nd new deve lopme nts. Carrying out innov ation, coor dinati on a nd development of green, ope n, s hared i deas, must be mea surabl e, dire ct acti on wit h ne w devel opme nt concepts, trai ning ca dres. In a new development concept a s a yardsti ck. Esta blished i n line w ith the new conce pt of evaluati on system a nd eval uation criteri on, embodies the new devel opment poli cy, organizati on, ma ndate im plementation, always mea sure d by the new devel opment phil os ophy, conti nuous c orrection of forest transition course. In a new development concept for t he pat h comma nd. A s part of the implementati on of the ne w devel opme nt philosophy followe d and acti on gui deli nes, firmly adj usted, corre cted a nd rej ect uns uitable , ina ppropriate a nd eve n agains t the new devel opment i deas, be haviors a nd practi ces, more pragmatic approa ch base d on a br oad visi on, and creatively carry out e col ogica l construction, industrial devel opme nt, improvi ng pe opl e's liveli hood, such as t he w ork to ensure t hat new devel opme nt i deas take root in forest area s. I n a new dev elopment concept for wea pon traini ng ca dre. Educati on lea ders "in t he ne w, nothi ng" two articl es, e nha nci ng vitality and power. Combi ned devel opme nt "six big industry", a nd impl ementation "three big eng ineering", a nd create "two big e nvironment", strengt heni ng on new devel opme nt, and new e conomy concept of learni ng, and grasp and usi ng, real put thoug ht and action unified to new development conce pt up, at with new development concept arme d himse lf, and g ui de pra ctice , effective do a dvocate innovation, a nd focuse d on coor dinati on, a nd a dvocate gre en, a nd t hick plant open, and adva nce share d. Second, we must rely on Scie nce a nd te chnol ogy affects. Te chnical innovation is the promoti on of economi c transformation and upgra ding, quality a nd efficie ncy "first pow er".

答 案 课时跟踪检测(四) A级 1.选 D 函数 y= 1 3 的定义域为{x|x≠0},选项 A 中由 sin x≠0?x≠kπ,k∈Z,故 A

x

不对;选项 B 中 x>0,故 B 不对;选项 C 中 x∈R,故 C 不对;选项 D 中由正弦函数及分 式型函数的定义域确定方法可知定义域为{x|x≠0}.
?0,x≥0, ? 2. 选 C 对于选项 A, f(2x)=|2x|=2|x|=2f(x); 对于选项 B, f(x)=x-|x|=? ?2x,x<0, ?

当 x≥0 时,f(2x)=0=2f(x),当 x<0 时,f(2x)=4x=2· 2x=2f(x),恒有 f(2x)=2f(x);对于选 项 D,f(2x)=-2x=2(-x)=2f(x);对于选项 C,f(2x)=2x+1=2f(x)-1.

?lg x,x>0, ? 3.选 A ∵f(x)=? 又-2<0, x ? ?10 ,x≤0,
∴f(-2)=10-2,10-2>0,f(10-2)=lg10-2=-2. 4.选 C 从球的形状可知,水的高度开始时增加的速度越来越慢,当超过半球时,增 加的速度又越来越快. 5.解析:选 B ∵g(x+2)=2x+3=2(x+2)-1 ∴g(x)=2x-1.
livelihood, i s related to people's w ell-being a nd social harmony and stabilit y. We need t o prote ct and improve the livelihood of the people as the starting point a nd e ndi ng point of transiti on a nd impr ove forest pe ople' s feeling and ha ppi nes s. To prom ote povert y relief a nd development work . Impl ementing poverty alleviation cr ucial proje ct is a major strategi c de cisi on made by the CPC Central Committee, is als o determine d by the provi ncial "first project", we must unify thi nking a nd a ction to the re quireme nt s of the Central, pr ovincial, res olutely wi n the poverty battle. T he previ ous phase I to 18 stations, Tahe, Pine Ri dge research, v isite d many of the poor, go, the heavie r, more pre ssur e. For poverty relief and development w ork, we must pay attention t o it , always in mi nd, gras ping hands, s hould not be blindly optimistic, t here ca n be no s lack. Poverty alleviati on a nd development li es in pre cise, a ccurate. Pre sent, i n order to find out the real base of poor pe ople a s soon a s possi ble, come up with 强 很 、 力 响 影 ; 专 最 该 时 同 办 举 么 致 一 相 场 市 标 目 们 我 与 否 是 虑 考 要 首 于 对 。 外 次 其 , 合 综 和 览 展 业 行 名 著 性 际 的 内 国 加 参 择 选 先 优 feasible poverty standards, state card, built on t he ba sis of docume nt management . To firmly establis h the " poverty reducti on" concept, increase t he inte nsity of res our ce integration, a nd relate d funding, with limite d funds wi sely. By usi ng a combi nation of empl oym ent, e ntrepre neurs hip for poverty eradication poverty eradi cation, educati on, poverty all eviation, medi cal aid of poverty means, du e to effects of poli cies, those poli cies, e ns ure the com pletion of missi on obj ectives for poverty eradicati on for t he year. To actively promote t he constr ucti on of new t owns. I n February t his yea r, promulgate d by the State Council on furt her pr omoting urba nization constructi on of new opi nions, propos ed to a dhere to t he people-centere d, four moder nizati ons synchronizati on, optimizati on, e col ogy civ ilization and cultural heritage of new urba nization pat h with Chi nese characteristi cs. A ccor ding t o distri ct -wi de constructi on of civiliz ed city and the beautif ul country side, f urther stre ngthe ning of urba n transport, water supply a nd drainage a nd sewage, waste dis posal ground, underground, s uch as infrastructure construction, strive to create a safer and m ore livable environment. To a ctively seize t he full st op a nd opportunities for poverty alleviation and dev elopment, further efforts to increa se forest villages merge, population to the County (distri ct) Council sites a nd centre s concentrated i n villages a nd towns . Com bine d devel opme nt of urban constructi on a nd t ourism i ndustries, careful pla nni ng and constr ucti on of a number of suita ble for resi dential a nd farm tour towns a nd v illages, f orming one village one product, a feature pattern. Closer to the ma sses. Si nce last year, our i n-dept h implementati on of the leadi ng ca dres of grassr oots mas ses at w ork, solve t he pr oblem s of a large number of p eople, get the mas ses give w hole hearted support to and prais e, this w ork will carry on, abs olutely cannot or movement. Grassr oots masse s and ca dres in com bination wit h poverty re duction, com bine d with the stea dy work of

letters and calls, a nd do pra ctical t hings for t he masse s com bine g ood, effective through rea chi ng pe ople at the servi ce of the "last mile". T hird, foster t he devel opme nt of new e nergy, new G eneral Se cretary XI Ji npi ng stresse d devel opme nt of innovation forest restructuring, revitalization of the ol d indust rial bases i n Northeast Chi na is the State's maj or strategy, Central ha s iss ued compr ehe nsive opi nions of revitalizi ng Nort heast China and other old i ndustrial ba ses, t he CPC Ce ntral Committee on revitalizati on in Nort heast China w ere ... V igorous determination does not waver, the w ork does not sl acken off. Be firm with in the devel opment has more t o do with har d, and not muddle al ong, passiv e ina ction. To re ly on t heir ow n efforts, ca n't wait, ca n't wait, stand still. T his not only pr ovides new opportunities for development in our regi on, a nd gave us ne w requirements. We must s eize the opportunity, full use of national policy, ha s to be m ore com plicate d, to start and target, give full play to t he initiative of leadi ng ca dres at all level s, active, active, focusi ng on building new moment um for devel opment , accelerating t ransformation of forest devel opment . To im plement t he ne w devel opme nt philos ophy. Phi los ophy is the action gui de, new ideas a nd new deve lopme nts. Carrying out innov ation, coor dinati on a nd development of green, ope n, s hared i deas, must be mea surabl e, dire ct acti on wit h ne w devel opme nt concepts, trai ning ca dres. In a new development concept a s a yardsti ck. Esta blished i n line w ith the new conce pt of evaluati on system a nd eval uation criteri on, embodies the new devel opment poli cy, organizati on, ma ndate im plementation, always mea sure d by the new devel opment phil os ophy, conti nuous correction of forest transition course. In a new development concept for t he pat h comma nd. A s part of the implementati on of the ne w devel opme nt philosophy followe d and acti on gui deli nes, firmly adj usted, corre cted a nd rej ect uns uitable , ina ppropriate a nd eve n agains t the new devel opment i deas, be haviors a nd practi ces, more pragmatic approa ch base d on a br oad visi on, and creatively carry out e col ogica l construction, industrial devel opme nt, improvi ng pe opl e's liveli hood, such as t he w ork to ensure t hat new devel opment i deas take root in forest area s. I n a new dev elopment concept for wea pon traini ng ca dre. Educati on lea ders "in t he ne w, nothi ng" two articl es, e nha nci ng vitality and power. Combi ned devel opme nt "six big industry", a nd impl ementation "three big engineering", a nd create "two big e nvironment", strengt heni ng on new devel opme nt, and new e conomy concept of learni ng, and gr asp and usi ng, real put thoug ht and action unified to new development conce pt up, at with new development concept arme d himse lf, and gui de pra ctice , effective do a dvocate innovation, a nd focuse d on coor dinati on, a nd a dvocate gre en, a nd t hick plant open, a nd adva nce share d. Second, we must rely on Scie nce a nd te chnol ogy affects. Te chnical innovation is the promoti on of economi c transformation and upgra ding, quality a nd efficie ncy "first pow er".

6. 选 A 法一: 当 a>0 时, 由 f(a)+f(1)=0 得 2a+2=0, 可见不存在实数 a 满足条件, 当 a<0 时,由 f(a)+f(1)=0 得 a+1+2=0, 解得 a=-3,满足条件. 法二:由指数函数的性质可知:2x>0 ,又因为 f(1)=2,所以 a<0,所以 f(a)=a+1, 即 a+1+2=0,解得:a=-3. 法三:验证法,把 a=-3 代入 f(a)=a+1=-2,又因为 f(1)=2,所以 f(a)+f(1)=0, 满足条件. 7.解析:由题知,2f(x)-f(-x)=3x+1,① 将①中 x 换为-x,则有 2f(-x)-f(x)=-3x+1,② ①×2+②得 3f(x)=3x+3, ∴f(x)=x+1. 答案:x+1 8.解析:由题知,f(1)=2+1=3,f(f(1))=f(3)=32+6a,若 f(f(1))>3a2,则 9+6a>3a2, 即 a2-2a-3<0, 解得-1<a<3. 答案:(-1,3) 9.解析:由已知可得 M=N,
2 2 ? ? ?a -4a=-2, ?a -4a+2=0, 故? 得? 2 2 b - 4 b + 1 =- 1 , ? ? ? ?b -4b+2=0,

所以 a,b 是方程 x2-4x+2=0 的两根, 故 a+b=4. 答案:4 10.解:(1)点 A 表示无人乘车时收支差额为-20 元,点 B 表示有 10 人乘车时收支差 额为 0 元,线段 AB 上的点表示亏损,AB 延长线上的点表示赢利. (2)图 2 的建议是降低成本,票价不变,图 3 的建议是提高票价. (3)图 1、2 中的票价是 2 元.图 3 中的票价是 4 元.

livelihood, i s related to people's w ell-being a nd social harmony and stabilit y. We need t o prote ct and improve the livelihood of the people as the starting point a nd e ndi ng point of transiti on a nd impr ove forest pe ople' s feeling and ha ppi nes s. To prom ote poverty relief a nd development work . Impl ementing poverty alleviation cr ucial proje ct is a major strategi c de cisi on made by the CPC Central Committee, is als o determine d by the provi ncial "first project", we must unify thi nking a nd a ction to the re quireme nts of the Central, pr ovincial, res olutely wi n the poverty battle. T he previ ous phase I to 18 stations, Tahe, Pine Ri dge research, visite d many of the poor, go, the heavie r, more pre ssur e. For poverty relief and development w ork, we must pay attention t o it, always in mi nd, gras ping hands, s hould not be blindly optimistic, t here ca n be no s lack. Poverty alleviati on a nd development li es in pre cise, a ccurate. Pre sent, i n order to find out the real base of poor pe ople a s soon a s possi ble, come up with 强 很 、 力 响 影 ; 专 最 该 时 同 办 举 么 致 一 相 场 市 标 目 们 我 与 否 是 虑 考 要 首 于 对 。 外 次 其 , 合 综 和 览 展 业 行 名 著 性 际 的 内 国 加 参 择 选 先 优 feasible poverty standards, state card, built on t he ba sis of docume nt management . To firmly establis h the " poverty reducti on" concept, increase t he inte nsity of res our ce integration, a nd relate d funding, with limite d funds wi sely. By usi ng a combi nation of empl oyment, e ntrepre neurs hip for poverty eradication poverty eradi cation, educati on, povert y all eviation, medi cal aid of poverty means, due to effects of poli cies, those poli cies, e ns ure the com pletion of missi on obj ectives for poverty eradicati on for t he year. To actively promote t he constr ucti on of new t owns. I n February t his yea r, promulgate d by the State Council on furt her pr omoting urba nization constructi on of new opi nions, propos ed to a dhere to t he people-centere d, four moder nizati ons synchronizati on, optimizati on, e col ogy civ ilization and cultural heritage of new urba nization pat h with Chi nese characteristi cs. A ccor ding t o distri ct-wi de constructi on of civiliz ed city and the beautif ul country side, f urther stre ngthe ning of urba n transport, water supply a nd drainage a nd sewage, waste dis posal ground, underground, s uch as infrastructure construction , strive to create a safer and m ore livable environment. To a ctively seize t he full st op a nd opportunities for poverty allevi ation and dev elopment, further efforts to increa se forest villages merge, population to the County (distri ct) Council sites a nd centre s concentrated i n villages a nd towns . Com bine d devel opme nt of urban constructi on a nd t ourism i ndustries, careful pla nni ng and constr ucti on of a number of suita ble for resi dential a nd farm tour towns a nd v illages, f orming one village one product, a feature pattern. Closer to the ma sses. Si nce last year, our i n-dept h implementati on of the leadi ng ca dres of grassr oots mas ses at w ork, solve t he pr oblem s of a large number of people, get the mas ses give w hole hearted support to and prais e, this w ork will carry on, abs olutely cannot or movement. Grassroots masse s and ca dres in com bination wit h poverty re duction, com bine d with the stea dy work of

letters and calls, a nd do pra ctical t hings for t he masse s com bine g ood, effective through rea chi ng pe ople at the servi ce of the "last mile". T hird, foster t he devel opme nt of new e nergy, new G eneral Se cretary XI Ji npi ng stresse d devel opme nt of innovation forest restructuring, revitalization of the ol d industrial bases i n Northeast Chi na is the State's maj or strategy, Central ha s iss ued compr ehe nsive opi nions of revitalizi ng Nort heast China and other old i ndustrial ba ses, t he CPC Ce ntral Committee on revitalizati on in Nort heast China w ere ... V igorous determination does not waver, the w ork does not sl acken off. Be firm with in the devel opment has more t o do with har d, and not muddle al ong, passiv e ina ction. To re ly on t heir ow n efforts, ca n't wait, ca n't wait, stand still. T his not only pr ovides new opportunities for dev elopment in our regi on, a nd gave us ne w requirements. We must s eize the opportunity, full use of national policy, ha s to be m ore com plicate d, to start and target, give full play to t he initiative of leadi ng ca dres at all level s, active, active, focusi ng on building new moment um for devel opment , accelerating t ransformation of forest devel opment . To im plement t he ne w devel opme nt philos ophy. Phi los ophy is the action gui de, new ideas a nd new deve lopme nts. Carrying out innov ation, coor dinati on a nd development of green, ope n, s hared i deas, must be mea surabl e, dire ct acti on wit h ne w devel opme nt concepts, trai ning ca dres. In a new development concept a s a yardsti ck. Esta blished i n line w ith the new conce pt of evaluati on system a nd eval uation criteri on, embodies the new devel opment poli cy, organizati on, ma ndate im plementation, always mea sure d by the new devel opment phil os ophy, conti nuous c orrection of forest transition course. In a new development concept for t he pat h comma nd. A s part of the implementati on of the ne w devel opme nt philosophy followe d and acti on gui deli nes, firmly adj usted, corre cted a nd rej ect uns uitable , ina ppropriate a nd eve n agains t the new devel opment i deas, be haviors a nd practi ces, more pragmatic approa ch base d on a br oad visi on, and creatively carry out e col ogica l construction, industrial devel opme nt, improvi ng pe opl e's liveli hood, such as t he w ork to ensure t hat new devel opme nt i deas take root in forest area s. I n a new dev elopment concept for wea pon traini ng ca dre. Educati on lea ders "in t he ne w, nothi ng" two articl es, e nha nci ng vitality and power. Combi ned devel opme nt "six big industry", a nd impl ementation "three big eng ineering", a nd create "two big e nvironment", strengt heni ng on new devel opme nt, and new e conomy concept of learni ng, and grasp and usi ng, real put thoug ht and action unified to new development conce pt up, at with new development concept arme d himse lf, and g ui de pra ctice , effective do a dvocate innovation, a nd focuse d on coor dinati on, a nd a dvocate gre en, a nd t hick plant open, and adva nce share d. Second, we must rely on Scie nce a nd te chnol ogy affects. Te chnical innovation is the promoti on of economi c transformation and upgra ding, quality a nd efficie ncy "first pow er".

(4)斜率表示票价. 2 11.解:由 f(2)=1 得 =1,即 2a+b=2; 2a+b 由 f(x)=x 得

? 1 -1? =x,变形得 x? ? = 0, ?ax+b ? ax+b
x

1-b 解此方程得 x=0 或 x= , a 1-b 又因方程有唯一解,故 =0, a 1 解得 b=1,代入 2a+b=2 得 a= , 2 所以 f(x)= . x+2 2x

12.解:当 x∈[0,30]时,设 y=k1x+b1, 1 ? ? ?k1=15, ?b1=0, 由已知得? 解得? ?30k1+b1=2, ? ? ?b1=0. 1 即 y= x. 15 当 x∈(30,40)时,y=2; 当 x∈[40,60]时,设 y=k2x+b2, 1 ? ? ?k2=10, ?40k2+b2=2, 由已知得? 解得? ?60k2+b2=4, ? ? ?b2=-2. 1 即 y= x-2. 10

? 综上,f(x)=?2,x∈?30,40?, 1 x-2,x∈[40,60]. ?10
B级 1? 1 1? 1 1 1.选 B 对于①,f(x)=x- ,f? = -x=-f(x),满足;对于②,f? ?x?=x+x=f(x), x ? x? x

1 x,x∈[0,30], 15

livelihood, i s related to people's w ell-being a nd social harmony and stabilit y. We need t o prote ct and improve the livelihood of the people as the starting point a nd e ndi ng point of transiti on a nd impr ove forest pe ople' s feeling and ha ppi nes s. To prom ote povert y relief a nd development work . Impl ementing poverty alleviation cr ucial proje ct is a major strategi c de cisi on made by the CPC Central Committee, is als o determine d by the provi ncial "first project", we must unify thi nking a nd a ction to the re quireme nt s of the Central, pr ovincial, res olutely wi n the poverty battle. T he previ ous phase I to 18 stations, Tahe, Pine Ri dge research, v isite d many of the poor, go, the heavie r, more pre ssur e. For poverty relief and development w ork, we must pay attention t o it , always in mi nd, gras ping hands, s hould not be blindly optimistic, t here ca n be no s lack. Poverty alleviati on a nd development li es in pre cise, a ccurate. Pre sent, i n order to find out the real base of poor pe ople a s soon a s possi ble, come up with 强 很 、 力 响 影 ; 专 最 该 时 同 办 举 么 致 一 相 场 市 标 目 们 我 与 否 是 虑 考 要 首 于 对 。 外 次 其 , 合 综 和 览 展 业 行 名 著 性 际 的 内 国 加 参 择 选 先 优 feasible poverty standards, state card, built on t he ba sis of docume nt management . To firmly establis h the " poverty reducti on" concept, increase t he inte nsity of res our ce integration, a nd relate d funding, with limite d funds wi sely. By usi ng a combi nation of empl oym ent, e ntrepre neurs hip for poverty eradication poverty eradi cation, educati on, poverty all eviation, medi cal aid of poverty means, du e to effects of poli cies, those poli cies, e ns ure the com pletion of missi on obj ectives for poverty eradicati on for t he year. To actively promote t he constr ucti on of new t owns. I n February t his yea r, promulgate d by the State Council on furt her pr omoting urba nization constructi on of new opi nions, propos ed to a dhere to t he people-centere d, four moder nizati ons synchronizati on, optimizati on, e col ogy civ ilization and cultural heritage of new urba nization pat h with Chi nese characteristi cs. A ccor ding t o distri ct -wi de constructi on of civiliz ed city and the beautif ul country side, f urther stre ngthe ning of urba n transport, water supply a nd drainage a nd sewage, waste dis posal ground, underground, s uch as infrastructure construction, strive to create a safer and m ore livable environment. To a ctively seize t he full st op a nd opportunities for poverty alleviation and dev elopment, further efforts to increa se forest villages merge, population to the County (distri ct) Council sites a nd centre s concentrated i n villages a nd towns . Com bine d devel opme nt of urban constructi on a nd t ourism i ndustries, careful pla nni ng and constr ucti on of a number of suita ble for resi dential a nd farm tour towns a nd v illages, f orming one village one product, a feature pattern. Closer to the ma sses. Si nce last year, our i n-dept h implementati on of the leadi ng ca dres of grassr oots mas ses at w ork, solve t he pr oblem s of a large number of p eople, get the mas ses give w hole hearted support to and prais e, this w ork will carry on, abs olutely cannot or movement. Grassr oots masse s and ca dres in com bination wit h poverty re duction, com bine d with the stea dy work of

letters and calls, a nd do pra ctical t hings for t he masse s com bine g ood, effective through rea chi ng pe ople at the servi ce of the "last mile". T hird, foster t he devel opme nt of new e nergy, new G eneral Se cretary XI Ji npi ng stresse d devel opme nt of innovation forest restructuring, revitalization of the ol d indust rial bases i n Northeast Chi na is the State's maj or strategy, Central ha s iss ued compr ehe nsive opi nions of revitalizi ng Nort heast China and other old i ndustrial ba ses, t he CPC Ce ntral Committee on revitalizati on in Nort heast China w ere ... V igorous determination does not waver, the w ork does not sl acken off. Be firm with in the devel opment has more t o do with har d, and not muddle al ong, passiv e ina ction. To re ly on t heir ow n efforts, ca n't wait, ca n't wait, stand still. T his not only pr ovides new opportunities for development in our regi on, a nd gave us ne w requirements. We must s eize the opportunity, full use of national policy, ha s to be m ore com plicate d, to start and target, give full play to t he initiative of leadi ng ca dres at all level s, active, active, focusi ng on building new moment um for devel opment , accelerating t ransformation of forest devel opment . To im plement t he ne w devel opme nt philos ophy. Phi los ophy is the action gui de, new ideas a nd new deve lopme nts. Carrying out innov ation, coor dinati on a nd development of green, ope n, s hared i deas, must be mea surabl e, dire ct acti on wit h ne w devel opme nt concepts, trai ning ca dres. In a new development concept a s a yardsti ck. Esta blished i n line w ith the new conce pt of evaluati on system a nd eval uation criteri on, embodies the new devel opment poli cy, organizati on, ma ndate im plementation, always mea sure d by the new devel opment phil os ophy, conti nuous correction of forest transition course. In a new development concept for t he pat h comma nd. A s part of the implementati on of the ne w devel opme nt philosophy followe d and acti on gui deli nes, firmly adj usted, corre cted a nd rej ect uns uitable , ina ppropriate a nd eve n agains t the new devel opment i deas, be haviors a nd practi ces, more pragmatic approa ch base d on a br oad visi on, and creatively carry out e col ogica l construction, industrial devel opme nt, improvi ng pe opl e's liveli hood, such as t he w ork to ensure t hat new devel opment i deas take root in forest area s. I n a new dev elopment concept for wea pon traini ng ca dre. Educati on lea ders "in t he ne w, nothi ng" two articl es, e nha nci ng vitality and power. Combi ned devel opme nt "six big industry", a nd impl ementation "three big engineering", a nd create "two big e nvironment", strengt heni ng on new devel opme nt, and new e conomy concept of learni ng, and gr asp and usi ng, real put thoug ht and action unified to new development conce pt up, at with new development concept arme d himse lf, and gui de pra ctice , effective do a dvocate innovation, a nd focuse d on coor dinati on, a nd a dvocate gre en, a nd t hick plant open, a nd adva nce share d. Second, we must rely on Scie nce a nd te chnol ogy affects. Te chnical innovation is the promoti on of economi c transformation and upgra ding, quality a nd efficie ncy "first pow er".

不满足;对于③,

1? f? ? x ?=

? ? 1 ?0,x=1, ? >1, ?-x,1 x
1

1 1 ,0< <1, x x

,x>1, ? x ? 1 ? 即 f? ? x?=?0,x=1, ?-x,0<x<1, ? 1? 故 f? ? x?=-f(x),满足.综上可知,满足“倒负”变换的函数是①③. 2.选 C ∵f(0)=0,f(1-x)=1-f(x),

1? 1 ∴f(1)=1,又 f? ?3?=2f(1), 1? 1 ∴f? ?3?=2,又∵f(1-x)+f(x)=1, 1? ?1? ?1?=1, ∴f? + f = 1 ,∴ f ?2? ?2? ?2? 2 1? ?1? ∴f? ?3?+f?2?=1. 3.解:(1)由已知,g(2)=1,f(2)=3, 故 f(g(2))=f(1)=0, g(f(2))=g(3)=2. (2)当 x>0 时,g(x)=x-1, 故 f(g(x))=(x-1)2-1=x2-2x; 当 x<0 时,g(x)=2-x, 故 f(g(x))=(2-x)2-1=x2-4x+3;
2 ? ?x -2x,x>0, 所以 f(g(x))=? ?x2-4x+3,x<0. ?

当 x>1 或 x<-1 时,f(x)>0, 故 g(f(x))=f(x)-1=x2-2;

livelihood, i s related to people's w ell-being a nd social harmony and stabilit y. We need t o prote ct and improve the livelihood of the people as the starting point a nd e ndi ng point of transiti on a nd impr ove forest pe ople' s feeling and ha ppi nes s. To prom ote poverty relief a nd development work . Impl ementing poverty alleviation cr ucial proje ct is a major strategi c de cisi on made by the CPC Central Committee, is als o determine d by the provi ncial "first project", we must unify thi nking a nd a ction to the re quireme nts of the Central, pr ovincial, res olutely wi n the poverty battle. T he previ ous phase I to 18 stations, Tahe, Pine Ri dge research, visite d many of the poor, go, the heavie r, more pre ssur e. For poverty relief and development w ork, we must pay attention t o it, always in mi nd, gras ping hands, s hould not be blindly optimistic, t here ca n be no s lack. Poverty alleviati on a nd development li es in pre cise, a ccurate. Pre sent, i n order to find out the real base of poor pe ople a s soon a s possi ble, come up with 强 很 、 力 响 影 ; 专 最 该 时 同 办 举 么 致 一 相 场 市 标 目 们 我 与 否 是 虑 考 要 首 于 对 。 外 次 其 , 合 综 和 览 展 业 行 名 著 性 际 的 内 国 加 参 择 选 先 优 feasible poverty standards, state card, built on t he ba sis of docume nt management . To firmly establis h the " poverty reducti on" concept, increase t he inte nsity of res our ce integration, a nd relate d funding, with limite d funds wi sely. By usi ng a combi nation of empl oyment, e ntrepre neurs hip for poverty eradication poverty eradi cation, educati on, povert y all eviation, medi cal aid of poverty means, due to effects of poli cies, those poli cies, e ns ure the com pletion of missi on obj ectives for poverty eradicati on for t he year. To actively promote t he constr ucti on of new t owns. I n February t his yea r, promulgate d by the State Council on furt her pr omoting urba nization constructi on of new opi nions, propos ed to a dhere to t he people-centere d, four moder nizati ons synchronizati on, optimizati on, e col ogy civ ilization and cultural heritage of new urba nization pat h with Chi nese characteristi cs. A ccor ding t o distri ct-wi de constructi on of civiliz ed city and the beautif ul country side, f urther stre ngthe ning of urba n transport, water supply a nd drainage a nd sewage, waste dis posal ground, underground, s uch as infrastructure construction , strive to create a safer and m ore livable environment. To a ctively seize t he full st op a nd opportunities for poverty allevi ation and dev elopment, further efforts to increa se forest villages merge, population to the County (distri ct) Council sites a nd centre s concentrated i n villages a nd towns . Com bine d devel opme nt of urban constructi on a nd t ourism i ndustries, careful pla nni ng and constr ucti on of a number of suita ble for resi dential a nd farm tour towns a nd v illages, f orming one village one product, a feature pattern. Closer to the ma sses. Si nce last year, our i n-dept h implementati on of the leadi ng ca dres of grassr oots mas ses at w ork, solve t he pr oblem s of a large number of people, get the mas ses give w hole hearted support to and prais e, this w ork will carry on, abs olutely cannot or movement. Grassroots masse s and ca dres in com bination wit h poverty re duction, com bine d with the stea dy work of

letters and calls, a nd do pra ctical t hings for t he masse s com bine g ood, effective through rea chi ng pe ople at the servi ce of the "last mile". T hird, foster t he devel opme nt of new e nergy, new G eneral Se cretary XI Ji npi ng stresse d devel opme nt of innovation forest restructuring, revitalization of the ol d industrial bases i n Northeast Chi na is the State's maj or strategy, Central ha s iss ued compr ehe nsive opi nions of revitalizi ng Nort heast China and other old i ndustrial ba ses, t he CPC Ce ntral Committee on revitalizati on in Nort heast China w ere ... V igorous determination does not waver, the w ork does not sl acken off. Be firm with in the devel opment has more t o do with har d, and not muddle al ong, passiv e ina ction. To re ly on t heir ow n efforts, ca n't wait, ca n't wait, stand still. T his not only pr ovides new opportunities for dev elopment in our regi on, a nd gave us ne w requirements. We must s eize the opportunity, full use of national policy, ha s to be m ore com plicate d, to start and target, give full play to t he initiative of leadi ng ca dres at all level s, active, active, focusi ng on building new moment um for devel opment , accelerating t ransformation of forest devel opment . To im plement t he ne w devel opme nt philos ophy. Phi los ophy is the action gui de, new ideas a nd new deve lopme nts. Carrying out innov ation, coor dinati on a nd development of green, ope n, s hared i deas, must be mea surabl e, dire ct acti on wit h ne w devel opme nt concepts, trai ning ca dres. In a new development concept a s a yardsti ck. Esta blished i n line w ith the new conce pt of evaluati on system a nd eval uation criteri on, embodies the new devel opment poli cy, organizati on, ma ndate im plementation, always mea sure d by the new devel opment phil os ophy, conti nuous c orrection of forest transition course. In a new development concept for t he pat h comma nd. A s part of the implementati on of the ne w devel opme nt philosophy followe d and acti on gui deli nes, firmly adj usted, corre cted a nd rej ect uns uitable , ina ppropriate a nd eve n agains t the new devel opment i deas, be haviors a nd practi ces, more pragmatic approa ch base d on a br oad visi on, and creatively carry out e col ogica l construction, industrial devel opme nt, improvi ng pe opl e's liveli hood, such as t he w ork to ensure t hat new devel opme nt i deas take root in forest area s. I n a new dev elopment concept for wea pon traini ng ca dre. Educati on lea ders "in t he ne w, nothi ng" two articl es, e nha nci ng vitality and power. Combi ned devel opme nt "six big industry", a nd impl ementation "three big eng ineering", a nd create "two big e nvironment", strengt heni ng on new devel opme nt, and new e conomy concept of learni ng, and grasp and usi ng, real put thoug ht and action unified to new development conce pt up, at with new development concept arme d himse lf, and g ui de pra ctice , effective do a dvocate innovation, a nd focuse d on coor dinati on, a nd a dvocate gre en, a nd t hick plant open, and adva nce share d. Second, we must rely on Scie nce a nd te chnol ogy affects. Te chnical innovation is the promoti on of economi c transformation and upgra ding, quality a nd efficie ncy "first pow er".

当-1<x<1 时,f(x)<0, 故 g(f(x))=2-f(x)=3-x2.
2 ? ?x -2,x>1或x<-1, 所以 g(f(x))=? ?3-x2,-1<x<1. ?

livelihood, i s related to people's w ell-being a nd social harmony and stabilit y. We need t o prote ct and improve the livelihood of the people as the starting point a nd e ndi ng point of transiti on a nd impr ove forest pe ople' s feeling and ha ppi nes s. To prom ote povert y relief a nd development work . Impl ementing poverty alleviation cr ucial proje ct is a major strategi c de cisi on made by the CPC Central Committee, is als o determine d by the provi ncial "first project", we must unify thi nking a nd a ction to the re quireme nt s of the Central, pr ovincial, res olutely wi n the poverty battle. T he previ ous phase I to 18 stations, Tahe, Pine Ri dge research, v isite d many of the poor, go, the heavie r, more pre ssur e. For poverty relief and development w ork, we must pay attention t o it , always in mi nd, gras ping hands, s hould not be blindly optimistic, t here ca n be no s lack. Poverty alleviati on a nd development li es in pre cise, a ccurate. Pre sent, i n order to find out the real base of poor pe ople a s soon a s possi ble, come up with 强 很 、 力 响 影 ; 专 最 该 时 同 办 举 么 致 一 相 场 市 标 目 们 我 与 否 是 虑 考 要 首 于 对 。 外 次 其 , 合 综 和 览 展 业 行 名 著 性 际 的 内 国 加 参 择 选 先 优 feasible poverty standards, state card, built on t he ba sis of docume nt management . To firmly establis h the " poverty reducti on" concept, increase t he inte nsity of res our ce integration, a nd relate d funding, with limite d funds wi sely. By usi ng a combi nation of empl oym ent, e ntrepre neurs hip for poverty eradication poverty eradi cation, educati on, poverty all eviation, medi cal aid of poverty means, du e to effects of poli cies, those poli cies, e ns ure the com pletion of missi on obj ectives for poverty eradicati on for t he year. To actively promote t he constr ucti on of new t owns. I n February t his yea r, promulgate d by the State Council on furt her pr omoting urba nization constructi on of new opi nions, propos ed to a dhere to t he people-centere d, four moder nizati ons synchronizati on, optimizati on, e col ogy civ ilization and cultural heritage of new urba nization pat h with Chi nese characteristi cs. A ccor ding t o distri ct -wi de constructi on of civiliz ed city and the beautif ul country side, f urther stre ngthe ning of urba n transport, water supply a nd drainage a nd sewage, waste dis posal ground, underground, s uch as infrastructure construction, strive to create a safer and m ore livable environment. To a ctively seize t he full st op a nd opportunities for poverty alleviation and dev elopment, further efforts to increa se forest villages merge, population to the County (distri ct) Council sites a nd centre s concentrated i n villages a nd towns . Com bine d devel opme nt of urban constructi on a nd t ourism i ndustries, careful pla nni ng and constr ucti on of a number of suita ble for resi dential a nd farm tour towns a nd v illages, f orming one village one product, a feature pattern. Closer to the ma sses. Si nce last year, our i n-dept h implementati on of the leadi ng ca dres of grassr oots mas ses at w ork, solve t he pr oblem s of a large number of p eople, get the mas ses give w hole hearted support to and prais e, this w ork will carry on, abs olutely cannot or movement. Grassr oots masse s and ca dres in com bination wit h poverty re duction, com bine d with the stea dy work of


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