1 . 设全集
,集合
,
.
(1)若
,求集合
;
(2)若“
”是“
”必要条件,求实数m的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa26ede4564b80c035c146272384bf9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7be6d52a203fdd219f5ae2e3cffb06fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a13f4249a2b8060b5ffb89345a68d2f.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8a3cc8c48bf54ec8252e5dce6867754.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b109e426e848c161a79366657ca264dc.png)
(2)若“
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ed006b944ea64f970fee46e2f558467.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e23af61cd402b3789af2401bde9cbefe.png)
您最近一年使用:0次
2 . 已知定圆
,动圆
过点
,且和圆
相切.
(1)求动圆圆心
的轨迹方程;
(2)若直线
与圆心
的轨迹交于
,
两点,
,且
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a217d78ad51a0e59b19d6067f3ea991c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1b47e7bf02b3ca16f7d96b9369e51a3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(1)求动圆圆心
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
(2)若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d00a5df9d281dd4e1e45bf6a4d6fb27.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3bdf0afbfbacfff4d4d8769ee017556.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/74d9fe2eb206dbb97c0b92b1eeee0fd5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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3 . 已知动点M到点
,
的距离之差的绝对值为
,斜率为
的直线l与点M的轨迹C交于A,B两点.
(1)求动点M的轨迹C的方程;
(2)若
(O为坐标原点),点
,记直线NA,
的斜率分别为
,
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a9659fe1279984da6a8d4d2bc369142.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/682f50684ae25e45dfec0eaf8112a7a3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e2031d209711b058f3d278ede3c1d33.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81fb134b2b48acc99213fff6ccfee65f.png)
(1)求动点M的轨迹C的方程;
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16dfce2e493bcb0865a479e1be8dfa32.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34d7db32e5ff96b8bb59cac3851d3c4c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/50b047b20afc82f1a2be470544f8c6d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6defc43285a40f7ccb74c1cc04265eba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/423b7ae39db552e60ee8b1d27312306f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b881044b5c73db6fcce110525741b02.png)
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解题方法
4 . 已知函数
,
,
是
的导函数.
(1)已知
的解集为A,集合
,若
,求a的值;
(2)若
在
上存在单调减区间,求a的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92aadf7d19473ff3b87efde342205397.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10bbdef421c976962a270a2beabbad91.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/724340d69477c0ec2418c392b22b1cab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(1)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7667e3a020f9d2883ffbaaed15e271b1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/930562fb80e02c4e3cab2abff75dbaa2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb73c76d1979737c59659b259743e4b2.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/189b2da6c420bf8f8900002d14f65f72.png)
您最近一年使用:0次
5 . 已知椭圆
过点
.过点
的直线
交直线
于点
,交
于
两点.
(1)求
的方程;
(2)是否存在实数
使得
?若存在,请求出
的值;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad523e69a1bf925e73a22900b9855df2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45de11ebfe5e834b60f4591c2b9dd72b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/797c488729678e74e0825c2e92b544b4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7789a500686c7a73770404ead6af0590.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)是否存在实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c7fd5255f502b5fa8ab3b7447b421155.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
您最近一年使用:0次
解题方法
6 . 已知焦点在
轴上,焦距为
的椭圆
经过点
.
(1)求椭圆
的标准方程;
(2)若倾斜角为
的直线
交椭圆
于A,
两点,且
,求直线
的方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38387ba1cadfd3dfc4dea4ca9f613cea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c179fe7eff7abfdd092b63c9c1b82d0c.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)若倾斜角为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1cde7aace5b888a1a1c26fb911e2f49.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/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f21e0dd59a7f98dd6820982416143664.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
您最近一年使用:0次
解题方法
7 . 已知函数
,证明:
在区间
上单调递增的充要条件是
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/27f67ebe3b975f0b846a38a76eff0dbf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2952239f733e7978b2abb3c20fafcf47.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aacce9a2647b42f0c4cc10020950573.png)
您最近一年使用:0次
8 . 命题“
是无理数”的否定是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aaaca4053a54355a557963564f2a3b01.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
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9 . “
”是“
”的( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e55aa0a20848c37c1892c567b2315e04.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b21c754c3a1191216b9ec5c413d1419.png)
A.充分不必要条件 | B.必要不充分条件 |
C.充分必要条件 | D.既不充分也不必要条件 |
您最近一年使用:0次
解题方法
10 . 通常称离心率为
的椭圆为“黄金椭圆”.已知椭圆
,
,
分别为左、右顶点,
,
分别为上、下顶点,
,
分别为左、右焦点,
为椭圆上一点,则满足下列条件能使椭圆
为“黄金椭圆”的有( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/18/6c239216-d510-4893-ba12-4e5df224fe36.png?resizew=168)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/029d393bb07b7140905b85f550519de4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad523e69a1bf925e73a22900b9855df2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a18722354086c42e62334983fc50eb6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd3b9e816b14051f785aa5aae72b8eed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97c01fdc7bc471af0b264a04aef0823e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43a71fc9c0068109dad1382354570665.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/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/18/6c239216-d510-4893-ba12-4e5df224fe36.png?resizew=168)
A.![]() | B.![]() |
C.四边形![]() ![]() ![]() | D.![]() ![]() |
您最近一年使用:0次