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解题方法
1 . 已知椭圆
的左、右焦点分别为
,动直线
过点
与椭圆
相交于
两点.
(1)当
轴时,求
的外接圆的方程;
(2)求
内切圆半径的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2242ca20bd7ab3d41b128e10a4071521.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d2a97987f71835f519b462f5b8f5957.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3fb78c5f885034612c0e030b920143d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/165a501b2e6a3acc46212e59a166c053.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3c07ebcbfacda073208d483c58e8a84.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3c07ebcbfacda073208d483c58e8a84.png)
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2024-06-04更新
|
30次组卷
|
2卷引用:陕西省宝鸡市长岭中学2023-2024学年高二上学期期中考试数学试题
2 . 如图,已知椭圆
的离心率为
,以该椭圆上的点和椭圆的左、右焦点
为顶点的三角形的周长为
.一等轴双曲线的顶点是该椭圆的焦点,设
为该双曲线上异于顶点的任一点,直线
和
与椭圆的交点分别为
和
.
(2)是否存在常数
,使得
恒成立?若存在,求
的值;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e4ae17293f583b2d2480971ad9424ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d5989c84e320b504511f23eeb6e7357.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d2a97987f71835f519b462f5b8f5957.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1edc33277bf11da7b67816efcdb7286.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ac86e1c253297a377e14fb9a1689be8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0739793f234f8e86adc6177801ae7295.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e52586ca2a3b783bc8092415e2d4bf6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c29a7e8eea08197bf53164a560bee58.png)
(2)是否存在常数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/226c2de886cb8e7166dff84a457cf41b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
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3 . 已知函数
.
(1)讨论函数
的单调性;
(2)设
.如果对任意
,且
,
,求a的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b4711f9568d7b1bc0a1c33895bcc884.png)
(1)讨论函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3002ad1638f25e355d70d5ab63e637f4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42fd7af568e3d9f444beb0ff41426477.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33bd24e647a626899a243a3f3984f90a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57cfc5075b9b64b8190b5831f74a4f06.png)
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4 . 已知函数
.
(1)函数
在
处的切线与x轴平行,求a的值;
(2)若函数
有两个零点,求a的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34208d70e209d5984d54dbbbe63a78ea.png)
(1)函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ea9824af71c9da5db5a00ec06063024.png)
(2)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
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解题方法
5 . 已知直线
与双曲线
交于
两点,
为双曲线的右焦点,且
,若
的面积为
,则下列结论正确的有( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa841ce5d58b64f747a3c1b69bb20a5b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/578832b5e2b61bf599918028e68da17f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7df702e63ec250e6d604d7caad449281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/004104bafb5f30338123d4ea2b7fedde.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b155facaed964aae6438f290a3cc0ed.png)
A.双曲线的离心率为![]() | B.双曲线的离心率为![]() |
C.双曲线的渐近线方程为![]() | D.![]() |
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解题方法
6 . 已知点
,动点A在圆M:
上运动,线段AN的垂直平分线交AM于P点,则P的轨迹方程为______ ;若动点Q在圆
上运动,则
的最大值为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e258dc5c8b4ea30bca80a56098065402.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7087fd4f638a63704624fbec6e67b2e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d30337ed2f68b73a050688566eac4e4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d44e8bc37ed03f44470762748a8f942a.png)
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7 . 已知函数
,下列说法不正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d0fa1681fe91d4fb3cd02be16ed1725b.png)
A.若![]() ![]() ![]() | B.若0为![]() ![]() |
C.![]() | D.若![]() ![]() |
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22-23高二下·广东深圳·期中
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8 . 函数
.
(1)若函数
存在过点
的切线,求实数
的取值范围;
(2)若
,函数
在区间
上最大值为
,最小值为
,求
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5fa719fa68bdfa2c4b9dcf87491b0b.png)
(1)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c832f2474efe89961ef41e884da7660c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d47e734b17201fe992be7775714e9558.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72850427e83ff19a24305783e080b280.png)
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解题方法
9 . 已知椭圆
的左,右焦点分别为
,下顶点为A,点M在直线
上.
(1)若
,线段AM 的中点在x轴上,求M 的坐标;
(2)若直线l与y轴交于B,直线AM 经过右焦点
,在
中有一个内角的余弦值为
,求b的值;
(3)若
,直线 l与椭圆Γ没有公共点,在椭圆Γ上存在一点
,
,点P到l的距离为d,且
,当a变化时,求d的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2e31f17d3eae2f76500ee2e8f955865.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f49644cd9fa4688cc3a74a234952530.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4a029686de8da4b04df32af401089a9.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/afa5584ebddd742ffcf0e58a4c3b108c.png)
(2)若直线l与y轴交于B,直线AM 经过右焦点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3fb78c5f885034612c0e030b920143d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a5e0a51c9e14fb246b0ba0b231c1e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eac97e6740365c85ad857aff85cefbe5.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bfc97864dd9abe8013867fdd6b9562c8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/386ddd7cba3dc92cb43743f663ae63d0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d0ca9a39621967d7ba5629ea9b12d78.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c318dc642320a42ad8f7c565246858b5.png)
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10 . 已知曲线
,对于命题:(1)垂直于x轴的直线与曲线C有且只有一个交点;(2)若点
为曲线C上任意两点,则有![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d48418567df7e02c8b85d5460a5a31c6.png)
下列判断正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ebcbd616d2eaccd41af7d42bd5f82347.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e453fda86a168d28478bd9772bee9d93.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d48418567df7e02c8b85d5460a5a31c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c90282d4a37c9a20620d4bbb0c263cae.png)
A.(1)和(2)均为真命题 | B.(1)和(2)均为假命题 |
C.(1)为真命题,(2)为假命题 | D.(1)为假命题,(2)为真命题 |
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