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(完整版)高一数学人教版期末考试试卷含答案解析).pdf

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1、高一上学期期末模拟数学试题一、选择题：1.集合1，2，3的真子集共有()A5 个B6 个C7 个D8 个2.已知角的终边过点P(4,3)，则2sincos的值是()A1B1 C52D253.已知扇形 OAB 的圆心角为rad4，其面积是 2cm2则该扇形的周长是()cm.A8 B6 C4 D2 4.已知集合2,0 xMy yx，)2lg(2xxyxN，则MNI为()A(1,2)B(1,)C,2D,16.函数)252sin(xy是（）A.周期为的奇函数 B.周期为的偶函数 C.周期为2的奇函数 D.周期为2的偶函数7.右图是函数)sin(xAy在一个周期内的图象，此函数的解析式为可为()A)32

2、sin(2xyB)322sin(2xyC)32sin(2xy)D)32sin(2xy8.已知函数)3(log)(22aaxxxf在区间 2，+)上是增函数，则a的取值范围是()A（4,B（2,C（4,4D（2,49.已知函数()f x对任意xR都有(6)()2(3),(1)f xf xfyf x的图象关于点(1,0)对称,则第 1 页，共 8 页(2013)f（）A10 B5C5 D0 10.已知函数21(0)(),()(1)(0)xxf xf xxaf xx若方程有且只有两个不相等的实数根,则实数a的取值范围为（）A(,0B(,1)C0,1)D0,)二、填空题:11.sin600=_.12.

3、函数2lg 212xyxx的定义域是 _.13.若2510ab，则ba11_.14.函数12()3sinlogf xxx的零点的个数是 _.15.函数()fx的定义域为D,若存在闭区间,a bD,使得函数()f x满足:()f x在,a b内是单调函数;()f x在,a b上的值域为2,2 ab,则称区间,a b为()yf x的“倍值区间”.下列函数中存在“倍值区间”的有 _)0()(2xxxf;()()xf xe xR;)0(14)(2xxxxf;()sin 2()f xx xR三、解答题16.已知31tan，（1）求：sincos5cos2sin的值（2）求：1cossin的值3 讨论关于

4、 x 的方程mxf)(解的个数。第 2 页，共 8 页文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y

5、10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G

6、6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7

7、I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C

8、7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F

9、8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1

10、U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G618.已知 f(x)2sin(2x)a1(a 为常数).(1)求 f(x)的递增区间；(2)若 x0，时，f(x)的最大值为 4，求 a 的值；(3)求出使 f(x)取最大值时 x 的集合.19.设函数xxxx

11、f11lg21)(求)(xf的定义域。判断函数)(xf的单调性并证明。解关于x的不等式21)21(xxf20.已知指数函数yg x满足：8)3(g，又定义域为R的函数2ng xfxmg x是奇函数.（1）确定yg x的解析式；（2）求nm,的值；（3）若对任意的tR，不等式22230fttftk恒成立，求实数k的取值范围21.已知函数()2f xxax，()22xg xx，其中aR.（1）写出()fx的单调区间（不需要证明）；（2）如果对任意实数0,1m，总存在实数0,2n，使得不等式()()f mg n成立，求实数a的取值范围.第 3 页，共 8 页文档编码:CJ6T1U7I5X2 HJ2H

12、7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N

13、5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:C

14、J6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ

15、2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG

16、3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码

17、:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2

18、HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6高一上期末模拟训练题2013.12 5.函数y=lg1|1|x的大致图象为(D)6.函数)252sin(xy是（B）A.周期为的奇函数 B.周期为的偶函数 C.周期为2的奇函数 D.周期为2的偶函数7.右图是函数)sin(xAy在一个周期内的图象，此函数的解析式为可为(B)A)32sin(2xyB)322

19、sin(2xyC)32sin(2xy)D)32sin(2xy8.已知函数)3(log)(22aaxxxf在区间 2，+)上是增函数，则a的取值范围是(C)A（4,B（2,C（4,4D（2,49.已知函数()f x对任意xR都有(6)()2(3),(1)f xf xfyf x的图象关于点(1,0)对称,则(2013)f（D）A10 B5C5 D0 10.已知函数21(0)(),()(1)(0)xxf xf xxaf xx若方程有且只有两个不相等的实数根,则实数a的取值范围为（B）A(,0B(,1)C0,1)D0,)二.填空题:第 4 页，共 8 页文档编码:CJ6T1U7I5X2 HJ2H7D4

20、C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3

21、F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T

22、1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7

23、D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5

24、P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ

25、6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2

26、H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G611.sin600=_.3212.函数2lg 212xyxx的定义域是 _.1,2213.若2510ab，则ba11_.1 16.已知31tan，（1）求：sincos5cos2sin的值（2）求：1cossin的值【解析】：（1）21（2）107.17.设)2(log)21()1(2)(212xxxxxxxf

27、，指出该(1)在直角坐标系中画出()f x的图象；并函数的值域。的方程(2)若3)(xf，求x值；(3)讨论关于 xmxf)(解的个数。解(1)图略，值域 xx4-(2)x=3-(3)m4无解；1m 4或-1m0,1解；m=1或 m-1,2解；0m1,3解。18.已知 f(x)2sin(2x)a1(a 为常数).(1)求 f(x)的递增区间；(2)若 x0，时，f(x)的最大值为 4，求 a 的值；第 5 页，共 8 页文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:C

28、J6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ

29、2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG

30、3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码

31、:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2

32、HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10

33、ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档

34、编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6(3)求出使 f(x)取最大值时 x 的集合.解(1)当 2k 2x2k，kZ，即 k xk，kZ时，f(x)单调递增，当 sin(2x)1 时，f(x)有最大值为 21a14，a1；(3)当 xR，f(x)取最大值时，2x 2k，kZ，xk，kZ，当 xR，使 f(x)取得最大值时 x 的集合为 x|x k，kZ.19.设函数xxxxf11lg21)(求)(xf的定义域。判断函数)(xf的单调性并证明。解关于x的不等式21)21(xx

35、f解：（I）()f x在定义域内为增函数.设1x，2x1,1且12xx.2()f x1()f x=2221221112222221121111xxxx xxx xxxxx=21212212()(1)11xxx xxx因为1211xx，所以210 xx，2110 x x所以有2()fx1()f x0即有()fx在定义域内为增函数.（II）因为()fx定义域为1,1且关于原点对称，又()fx=21xx=()f x所以()f x在定义域内为奇函数.第 6 页，共 8 页文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C

36、7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F

37、8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1

38、U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D

39、4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P

40、3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6

41、T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H

42、7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6由1()()02f tf t有1()()()2f tf tft又()fx在1,1上单调递增即1112tt.所以：1 1,2 4t.解：（1）设xg xa0a且a1,则38a，a=2,2xg x，（2）由（1）知：122xxnfxm，因为()f x是奇函数，所以(0)f=0，即1012nnm,1122xxfxm，又(1)1ff，111 22=214mmm；（3）由（2）知11211()22221

43、xxxf x，易知()f x在 R上为减函数.又因()f x是奇函数，从而不等式：等价于2223fttf tk=2f kt，因()f x为减函数，由上式得：2223ttkt,即对一切tR有：2220ttk，从而判别式212420.2kk21.已知函数()2f xxa x，()22xg xx，其中aR.（1）写出()fx的单调区间（不需要证明）；（2）如果对任意实数0,1m，总存在实数0,2n，使得不等式()()f mg n成立，求实数a的取值范围.解：（1）()(2),2,()()(2),2.xa xxf xxaxx第 7 页，共 8 页文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y1

44、0 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6

45、文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I

46、5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7

47、Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8

48、G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U

49、7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4

50、C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6文档编码:CJ6T1U7I5X2 HJ2H7D4C7Y10 ZG3N5P3F8G6当2a时，()f x的递增区间是(,)，()f x无减区间；当2a时，()f x的递增区间是(,2),2(,)2a；()f x的递减区间是2(2,)2a；当2a时，()f x的递增区间是2(,)2a,(2,)，()f x的递减区间是2(,2)2a（2）由题意，()f x在0,1上的最大值小于等于()g x在0,2上的最

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