甘肃省岷县二中2018_2019学年高二数学上学期第三次月考试题201812290134.doc

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1、- 1 -岷县二中 20182019 学年度第一学期月考试卷高二数学满分:150 分 时间:120 分钟一、选择题(本大题共 12 小题,每小题 5 分,共 60 分,在每小题给出的四个选项中,只有一项是符合题目要求的。 )1.命题“平行四边形的对角线相等且互相平分”是( )A p q B p q C D 以上均不正确p2.双曲线 1 的焦距为( )A 3 B 4 C 3 D4 3命题: 的否定是( )0,2xRA. B. 0,2xRC. D. ,2x4.条件甲:log 3x22 是条件乙:log 3x1 成立的( )A 充分不必要条件 B 必要不充分条件C 充要条件 D 既不充分也不必要条件

2、5.下列所给的有关命题中,说法错误的命题是( )A 命题“若 x23 x20,则 x1”的逆否命题是“若 x1,则 x23 x20”B x1 是 x23 x20 的充分不必要条件C 若 p q 为假命题,则 p, q 均为假命题D 对于命题 p: xR, x2 x10,则 p: xR, x01064.已知 F1, F2是椭圆 C 的两个焦点,焦距为 4.若 P 为椭圆 C 上一点,且 PF1F2的周长为14,则椭圆 C 的离心率 e 为( )A B C D7下列 4 个命题其中假命题是( )- 2 -A. B. C.21cossin,:21 xRxp yxyRyxpsin)sin(,:2 D.

3、in1,0:3 2coi:4 8.P 是椭圆 1 上的一点, F1, F2是焦点,若 F1PF260,则 PF1F2的面积是( )A B 64(2 ) C 64(2 ) D 649.下列命题中为真命题的是( )A 若 b2=ac,则 a,b,c 成等比数列B 存在 x0R,使得 sinx0+cosx0= 成立C 若向量 a,b 满足 ab=0,则 a=0 或 b=0D 若 a0.14. 已知椭圆经过两点( , )和( , ),则椭圆的标准方程为_15已知命题 p“存在 x01,2, -a0”,命题 q“存在 x0R, +2ax0+2-a=0”,若命题“ p 且 q”是真命题,则实数 a 的取值

4、范围是 .16椭圆 x24 y236 的弦被(4,2)平分,则此弦所在直线方程为_三.解答题(本大题共 6 小题,共 70 分,解答时应写出必要的文字说明、证明过程或演算步骤)17.(10 分)分别写出下列命题的逆命题,否命题,逆否命题,并判断其真假(1)矩形的对角线相等且互相平分;(2)正偶数不是质数18 (12 分)已知命题 p:方程 x2 mx10 有两个不相等的实根; q:不等式 4x24( m2)x10 的解集为 R.(1)若命题 q 为真,求实数 m 的取值范围;(2)若命题“ p 且 q”和“非 p”为假,求实数 m 的取值范围19.(12 分求满足下列条件的双曲线的标准方程(1

5、)经过点 A(4 ,3),且 a4;(2)经过点 A(2, )、 B(3,2 )20.(12 分)命题:3 mx2 mx10 恒成立是真命题,求实数 m 的取值范围21.(12 分)如图所示,已知动圆 P 过定点 A(3,0),并且在定圆 B:( x3) 2 y264 的内部与其内切,求动圆圆心 P 的轨迹方程- 4 -22 (12 分)已知椭圆的一个顶点为 A(0,-1) ,焦点在 x 轴上.若右焦点到直线02yx的距离为 3.(1)求椭圆的方程;(2)设椭圆与直线 )0(kmxy相交于不同的两点 M、N.当 AN时, 求 m 的取值范围.- 5 -高二数学1选择题BDDBC BAABD BC2填空题13. (3)(4)14. 1062yx15. a416. x2 y80

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