内蒙古鄂尔多斯市东联现代中学2018_2019学年高一数学上学期第一次月考试题.doc

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1、 1 -东联现代中学 20182019 年度第一学期第一次月考试题高一年级数学试卷考试时间:120 分钟 满分 150 分【注意】本试卷分第卷和第卷两部分。满分 150 分,考试时间 120 分钟。第 I 卷 1-12题用 2B 铅笔涂在答题卡上,第 II 卷 13-22 题,答案写在答题纸上。考完后只交答题卡、答题纸。第 I 卷一、选择题(每小题 5 分,共 12 小题)1.设集合 M0,1,2, P x|x23 x20,则 M P( )A1 B2 C0,1 D1,22.已知集合 A 中含有三个元素 0,1, x,且 x2 A,则实数 x 的值为( )A0 B1 C1 或1 D13已知全集

2、 U1,2,3,4,5,6,集合 P1,3,5, Q1,2,4,则( UP) Q( )A1 B1,2,4,6 C3,5 D1,2,3,4,54.下列各组函数表示同一函数的是( )A B C22(),()fxgx 0()1,()fxgx, Df ,0Rx2(),f 5.函数 1()32fx的定义域是( )A ,B 3,2)C )(,)D (6.函数 21(2xaxf 在 )4,(上是增函数,则实数 a的范围是( )A a 3B 5C a 3D 5- 2 -7.关于 x 的不等式 x22 ax8 a20)的解集为( x1, x2),且 x2 x115,则 a( )A. B. C. D.52 72

3、154 1528如图,函数 f(x)的图象是折线段 ABC,其中点 A, B, C 的坐标分别为(0,4),(2,0),(6,4),则 f(f(f(2)( )A.2 B.6 C.4 D.09.f(x)为(,)上的减函数, aR,则( )A f(a) f(2a) B f(a2) f(a)C f(a21) f(a) D f(a2 a) f(a)10.已知函数 为奇函数,且当 时, ,则 =( )x0x1xA2 B1 C0 D-211函数 y| x2|在区间3,0上是( )A递减 B递增C先减后增 D先增后减12若 f(x)是奇函数,且在(0,)上是增函数,又 f(3)0,则( x1) f(x)0

4、的解是( )A(3,0)(1,) B(3,0)(0,3)C(,3)(3,) D(3,0)(1,3)第 卷二、填空题(每小题 5 分,共 4 小题)13.下面给出的几个关系中: a, b;( a, b) a, b; a, bb, a;0.正确的是_14函数 f(x)2 x26 x1 在区间1,2上的最大值是_15.已知函数 f x2 ,则 f (3)等于_(x1x) 1x216 f(x)是定义在 R 上的奇函数,且单调递减,若 f(2 a) f(4 a)1.求:(1)A B;(2)(UA)( UB).19.(本小题满分 12 分)设函数 f(x) x22| x|(3 x3).(1)证明: f(x

5、)是偶函数;(2)画出此函数的图象,并指出函数的单调区间20.已知定义在 上的奇函数 是增函数,且 .(1,)1)(2xbaf 52)1(f()求函数 的解析式;xf()解不等式 .()(0tft21.已知函数 f(x) x22 ax2, x5,5(1)求实数 a 的取值范围,使得 y f(x)在区间5,5上是单调函数;(2)求 f(x)的最小值22.(本小题满分 12 分)已知函数 f(x)是定义在(0,)上的增函数,且满足 f(xy) f(x) f(y).(1)求 f(1)的值;(2)已知 f(3)1,且 f(a)f(a1)2,求 a 的取值范围;- 4 -(3)证明: f f(x) f(y)(xy)- 5 -东联现代中学 20182019 年度第一学期第一次月考试题高一年级数学试题答案1D 2D 3B 4C 5C 6B 7A 8A 9C 10D 11C 12D13. 14. 9 15. 11 16. a2,UB x|3 x1, A B x|x0.所以:(1) A B x|15,即 af(a1)2 化为 f(a)f(a1) f(9) f(9a9),由题意得Error!, 解得 1aError!.(3) f(x) fError! fError! f(y), fError! f(x) f(y)

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