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【河北省邯郸市鸡泽县第一中学2024届高三上学期第二次月考数学试题

  • 2026-02-21 11:13:30
【河北省邯郸市鸡泽县第一中学2024届高三上学期第二次月考数学试题

学年上学期第二次月考

高三数学试题

一、单选题

1设集合,则

A. B. 

C. D. 

2. 已知复数满足的共轭复数,则等于(

A. B. C. D. 

3. 已知向量,且,则的值为(

A. B. C. D. 

4. 已知函数在区间上单调递减,则的取值范围是(

A. B. C. D. 

5. 已知椭圆=1的离心率为,则k的值为(

A. 4B. C. 4D. 4

6. 过直线一点作圆的两条切线,切点分别为,当直线关于对称时,线段的长为(

A. 4B. C. D. 2

7. 已知等差数列的前项和为,命题,命题,则命题是命题的(

A. 充要条件B. 充分不必要条件

C. 必要不充分条件D. 既不充分也不必要条件

8已知满足,则

A. B. C. D. 

二、多选题

9. 随机抽取6位影迷对电影《长津湖》的评分,得到一组样本数据如下:,则下列关于该样本的说法中正确的有(

A. 均值为95B. 极差为6

C. 方差为26D. 80百分位数为97

10. 某地下车库在排气扇发生故障情况下测得空气中一氧化碳含量达到了危险状态,经抢修排气扇恢复正常,排气4分钟后测得车库内的一氧化碳浓度为64 ppm,继续排气4分钟后又测得浓度为32 ppm.由检验知该地下车库一氧化碳浓度y(单位:ppm)与排气时间t(单位:分)之间满足函数关系yft),其中R为常数).若空气中一氧化碳浓度不高于0.5 ppm,人就可以安全进入车库了,则下列说法正确的是(  )

A. 

B. 

C. 排气12分钟后,人可以安全进入车库

D. 排气32分钟后,人可以安全进入车库

11. 已知定义域为的函数对任意实数都有,且,则以下结论一定正确的有(

A. B. 是偶函数

C. 关于中心对称D. 

12. 截角四面体是一种半正八面体,可由四面体经过适当的截角,即截去四面体的四个顶点处的小棱锥所得的多面体,如图所示,将棱长为的正四面体沿棱的三等分点作平行于底面的截面,得到所有棱长均为的截角四面体,则下列说法正确的是(

A. 该截角四面体的内切球体积B. 该截角四面体的体积为

C. 该截角四面体的外接球表面积为D. 外接圆的面积为

三、填空题

13. 位女生,位男生中选人参加科技比赛,且至少有位女生入选,则不同的选法共有_____________种.(用数字填写答案

14. 已知一个圆台的上、下底面圆半径分别为25,高为4,则这个圆台的侧面积为______

15. 已知焦点在x轴上双曲线的左右焦点别为,其右支上存在一点P满足,且的面积为3,则该双曲线的离心率为______.

16. 已知点P为曲线上的动点,O为坐标原点.当最小时,直线OP恰好与曲线相切,则实数a___

四、解答题

17. 中,内角的对边分别为,且.

(1)求角的大小;

(2),求边上的高.

18. 已知等比数列的前项和为.

(1)求数列的通项公式;

(2)设数列满足,求数列的前项和.

19. 如图,在直三棱柱中,,且二面角为45°.

(1)求棱AC的长;

(2)D为棱的中点,求平面与平面夹角的正切值.

20. 已知函数

(1)讨论的单调性;

(2)时,证明

21. 在平面直角坐标系中,动点,满足,记点的轨迹为

(1)请说明是什么曲线,并写出它的方程;

(2)设不过原点且斜率为的直线交于不同的两点,线段的中点为,直线交于两点,请判断的关系,并证明你的结论.

22. 已知函数

1)当时,求曲线在点处的切线与两坐标轴围成的三角形的面积;

2)若不等式恒成立,求a的取值范围.

通过网盘分享的文件:【河北省邯郸市鸡泽县第一中学2024届高三上学期第二次月考数学试题

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  1. CONNECT:[ UseTime:0.000526s ] mysql:host=127.0.0.1;port=3306;dbname=nowww460;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.000683s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.000277s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.000288s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.000474s ]
  6. SELECT * FROM `set` [ RunTime:0.000209s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.000588s ]
  8. SELECT * FROM `article` WHERE `id` = 460010 LIMIT 1 [ RunTime:0.001177s ]
  9. UPDATE `article` SET `lasttime` = 1772100544 WHERE `id` = 460010 [ RunTime:0.001765s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 64 LIMIT 1 [ RunTime:0.000536s ]
  11. SELECT * FROM `article` WHERE `id` < 460010 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.000614s ]
  12. SELECT * FROM `article` WHERE `id` > 460010 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.000983s ]
  13. SELECT * FROM `article` WHERE `id` < 460010 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.001175s ]
  14. SELECT * FROM `article` WHERE `id` < 460010 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.000913s ]
  15. SELECT * FROM `article` WHERE `id` < 460010 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.000959s ]
0.081756s