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1 . 甲盒中装有3个蓝球、2个黄球,乙盒中装有2个蓝球、3个黄球,同时从甲、乙两盒中取出
个球交换,分别记交换后甲、乙两个盒子中蓝球个数的数学期望为
,
,则下列结论正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/763a092b3095ade85f59b24100e5de28.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d6b11fa5457fd1706f88c40bd204068d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b621680c81fe206297a22c8562011ef.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
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5卷引用:江西省部分学校2023-2024学年高二下学期开学考试数学试题
江西省部分学校2023-2024学年高二下学期开学考试数学试题(已下线)8.2 离散型随机变量及其分布列(4)河北省沧州市运东四校联考2023-2024学年高二下学期4月期中考试数学试题河北省石家庄市赵县河北赵县中学、高邑县第一中学、无极中学2023-2024学年高二下学期4月月考考试检测数学试题(已下线)专题06 离散型随机变量与正态分布--高二期末考点大串讲(苏教版2019选择性必修第二册)
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2 . 已知
是椭圆
与双曲线
的公共焦点,
的离心率为
的离心率为
为
与
的一个公共点,若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62a7bf1e495b950cf39a9146751559c0.png)
__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d2a97987f71835f519b462f5b8f5957.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd486b8796b3454eab219c28ed131683.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00a5591a59c432756459f9cef82f1dbc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36e86c007ee006f2d0d3b75ce7bec6e7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/509e5d1547aab8e27738ff20fd51d606.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62a7bf1e495b950cf39a9146751559c0.png)
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解题方法
3 . 已知点
是椭圆
的左顶点,过点
且斜率为
的直线
与椭圆
交于另一点
(点
在第一象限).以原点
为圆心,
为半径的圆在点
处的切线与
轴交于点
.若
,则椭圆
离心率的取值范围是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/851a5d6ec23256f9b4a9e98aa92945fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f645d4b09fba53f971172cd2602c691.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b32a39d07355dfa0395400f28b218cc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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4卷引用:浙江省名校协作体2023-2024学年高二下学期开学适应性考试数学试题
浙江省名校协作体2023-2024学年高二下学期开学适应性考试数学试题上海市民办南模中学2023-2024学年高二年下学期初态考试数学试卷(已下线)专题4 求圆锥曲线的离心率(高三压轴小题大全)【练】(已下线)专题4 求圆锥曲线的离心率(高三压轴小题大全)【讲】
4 . 已知
,
,
,
, 则
的大小关系为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6045d6fcdd88fc44709357ae02da5c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7afa999856f1ed9b0c76435bd044ad0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f293fe207cf449906c4384d6be5b8ac8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dea96026431c38813952bea6f235004a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76f0649064a085fb74c997fb507a9b6d.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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解题方法
5 . 已知函数
,
.
(1)若函数
在定义域上单调递增,求
的取值范围;
(2)若函数
有两个极值点
.
(i)求
的取值范围;
(ii)证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/baa6a40d8772bdc1becba2857272aa7a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10bbdef421c976962a270a2beabbad91.png)
(1)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ce7ae90d808f05e86ea063238e4b2f9.png)
(i)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(ii)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d70a31c1e21548002b21b55015d361cf.png)
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4卷引用:江苏省南京市五校2023-2024学年高二下学期期初调研测试数学试题
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6 . 已知函数
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62e177f476112a090b450becec8ab7e6.png)
A.![]() |
B.![]() |
C.直线![]() ![]() |
D.若![]() ![]() ![]() |
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6卷引用:江苏省南京市五校2023-2024学年高二下学期期初调研测试数学试题
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7 . 如图,将正四棱柱
斜立在平面
上,顶点
在平面
内,
平面
,点
在平面
内,且
.若将该正四棱柱绕
旋转,
的最大值为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d1d2e0f281222a5f289ea4008370aed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db768f2ad30b15e6d533056ee6332ea2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db5e7842ec06f4f0c29b7ca67810e68f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24bb49fdc6b6bbb2449fdf8a0de769d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
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6卷引用:云南省部分学校2023-2024学年高二下学期开学考试数学试题
名校
解题方法
8 . 如图,在
中,
,
,
.将
绕
旋转
得到
,
分别为线段
的中点.
到平面
的距离;
(2)求平面
与平面
夹角的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2b4dcc093218443f71a046b6df94bbe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/984b80660410b1d9a3bd0f607c01f924.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9774f83067ed956a551bc41adcce0469.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e671ec69011d5d368791070e722d832b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2b4dcc093218443f71a046b6df94bbe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abd13974aebe38eb2a1d744a01ea5aa5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be6a6301878fed2a01413020b27310a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3877c5dd48bc7311f79a38de74a6cab4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91e1e4115d78e625e9e0f47cdade3286.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c18e1963fd5895e9aef6263dbc153727.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a4d781525777c7b5284dffc70b2a28a.png)
(2)求平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/415440adb63f3bc728ae315b5d77ce4b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a4d781525777c7b5284dffc70b2a28a.png)
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6卷引用:云南省部分学校2023-2024学年高二下学期开学考试数学试题
解题方法
9 . 已知双曲线E:
的左、有焦点分别是
,
离心率为2,过右焦点
的直线交双曲线E的右支于A,B两点,
的内切圆圆心为M,则下列结论正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be3707ed18a4908434882eaf83aea091.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5076289823db419f94e9c0c8f4aafd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3fb78c5f885034612c0e030b920143d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3fb78c5f885034612c0e030b920143d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ccd8065fd9fe33e0b71d5933909f5c0.png)
A.双曲线E的渐近线方程为 ![]() |
B.直线![]() |
C.![]() |
D.M在定直线上 |
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10 . 在下列条件中,使M与A,B,C一定共面的是(其中O为坐标原点)( )
A.![]() | B.![]() |
C.![]() | D.![]() |
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3卷引用:安徽省马鞍山市第二中学2023-2024学年高二下学期阶段性检测数学试题
安徽省马鞍山市第二中学2023-2024学年高二下学期阶段性检测数学试题湖北省武汉市第七中学2023-2024学年高二下学期3月月考数学试卷(已下线)专题01 空间向量表示及运算--高二期末考点大串讲(苏教版2019选择性必修第二册)