甘肃省镇原县二中2018_2019学年高一数学上学期第一次月考试题(无答案).doc

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1、- 1 -20182019 学年度第一学期第一次月考试题高一(数学)一、选择题: (本大题共 12 小题,每小题 5 分,共 60 分)1.设集合 Mx|x 2x120,Nx|x 23x0,则 MN 等于A. 3 B.0,3, 4 C.3,4 D.0,42.设集合 |mZ, |13nMNZ则, A 01, B 1, , C 02, , D 012, , ,3.已知全集 Ix|x 是小于 9 的正整数 ,集合 M1,2,3 ,集合 N3,4,5, 6 ,则( IM) N 等于 A.3 B.7,8 C.4,5, 6 D. 4, 5,6, 7,84.设集合 Ax|x 参加自由泳的运动员,Bx|x 参

2、加蛙泳的运动员,对于“既参加自由泳又参加蛙泳的运动员”用集合运算表示为 (A)AB (B)A B (C)AB (D)A B5.已知函数 xf21)(的定义域为 M, 2)(xg的定义域为 N,则 MA.xB. C. D. 2x6.已知函数 的定义域是 ,则 的定义域是( )A BC D7.若函数 f(x)满足 f(3x2)9 x8,则 f(x)的解析式是( )A f(x)9 x8 B f(x)3 x2C f(x)3 x4 D f(x)3 x2 或 f(x)3 x48.下列四个函数中,在(0,)上为增函数的是(A)f(x)3x (B)f(x)x 23x (C)f(x)x (D)f(x)2- 2

3、-9已知 g(x)=1-2x,fg(x)= ,则 f( )等于 ( ))0(12x21A1 B3 C15 D3010函数 y= 是( )x192A奇函数 B偶函数 C既是奇函数又是偶函数 D非奇非偶数11.设函数 f (x)是( ,+ )上的减函数,又若 a R,则 ( )A f (a)f (2a) B f (a2)f (a) C f (a2+a)f (a) D f (a2+1)f (a)12若函数 y f(x)为偶函数,且在(0,)上是减函数,又 f(3)0,则0 的解集为( )f x f x2xA(3, 3) B(,3)(3,)C(3,0)(3,) D(,3)(0,3)20182019 学

4、年度第一学期第一次月考答题卡高一(数学)一、选择题题号 1 2 3 4 5 6 7 8 9 10 11 12答案二、填空题: (本大题共 4 小题,每小题 5 分,共 20 分)13、已知集合 U1,2,3,4,5,A2,3,4,B4,5,则 A( UB)14、已知集合 A 2,3,4 m4 ,集合 B 3, 2m若 BA,则实数 m 15、已知函数 是 上的增函数,且 ,则实数 的取值范围是_16、已知 f(x) 0562x ,若 f(x)10,则 x三、解答题- 3 -17.(10 分)设 A x|2x2 ax20, B x|x23 x2 a0,且 A B2(1)求 a 的值及集合 A,

5、B;(2)设全集 U A B,求( UA) ( UB);(3)写出( UA)( UB)的所有子集18(12 分)已知 y f(x)为二次函数,且 f(x1) f(x1)2 x24 x,求 f(x)的表达式19.(12 分)集合 A=(x,y) ,集合 B=(x,y) ,且 0022ymx 1yx,又 A ,求实数 m 的取值范围.2xB- 4 -20. (12 分)已知函数 (1)求函数 f(x)的定义域;(2)求 f(2)及 f(6)的值.21 (12 分)指出函数 在 上的单调性,并证明之.xf1)(0,1,- 5 -22 (12 分)已知函数 ,21)(xf(1)求 ;(2)试求 的值)1(xf )31()21( fff )10(ff

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