已知椭圆
的离心率为
,上顶点为
,左焦点为
,且直线
与圆
相切.
(1)求椭圆
的方程;
(2)设
是椭圆上的两个动点,且直线
的斜率满足
,求
的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad523e69a1bf925e73a22900b9855df2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/860884c0017c8bceb5b0edff796c144f.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/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f526a714205cd0590fdc7d12b377732.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5a5e484dfef494d27bc35ae7b8cf75d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f4479644182ad360931be124922e6c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/866b81a8384cce4f24867baca2e6820c.png)
更新时间:2022-04-29 22:15:39
|
相似题推荐
解答题-问答题
|
较难
(0.4)
名校
解题方法
【推荐1】已知椭圆
的一个顶点为
,离心率为
,过点
及左焦点
的直线交椭圆于
两点,右焦点设为
.
(1)求椭圆的方程;
(2)求
的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48da128547c4cf9745e8e4b99988a3db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9112bdf193400278a319ebd904d0f73e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d5989c84e320b504511f23eeb6e7357.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ebf09886d78142f483e163e0919dc50.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5076289823db419f94e9c0c8f4aafd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c29a7e8eea08197bf53164a560bee58.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a61d572ecf27dc02fcbd588f24647b1d.png)
(1)求椭圆的方程;
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24c084b48b27ce17a659fb3e9b79d684.png)
您最近一年使用:0次
【推荐2】已知椭圆E:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d7aea48c44781a844b5c19191f70f61.png)
.焦距为2c,
,左、右焦点分别为
,
.在椭圆E上任取一点
,
的周长为
.
(1)求椭圆E的标准方程;
(2)设点
关于原点的对称点为Q.过右焦点
作与直线PQ垂直的直线交椭圆E于A,B两点,求
的取值范围;
(3)若过点
的直线
与椭圆E交于C,D两点,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d7aea48c44781a844b5c19191f70f61.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f82eb4ba631d0f50d848aa6e576b379.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77b9a9560daa2a83e8b334f6957c304f.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/002ed1ebb2cb936e10ab478789f91c7c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1edc33277bf11da7b67816efcdb7286.png)
(1)求椭圆E的标准方程;
(2)设点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3fb78c5f885034612c0e030b920143d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f18ebca30c3c5afd0581fd5000bca15.png)
(3)若过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e271a0321ff1f5123c856e77e3c62b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e8a3365e99f926b1dafa901ab232152.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5bd2b5efb7c27ef39d73e20717c3735.png)
您最近一年使用:0次
解答题-证明题
|
较难
(0.4)
名校
解题方法
【推荐1】已知椭圆
的短轴长为2,离心率为
,点A是椭圆的左顶点,点E坐标为
,经过点E的直线l交椭圆于M,N两点,直线l斜率存在且不为0.
(1)求椭圆C的方程;
(2)设直线AM,AN分别交直线
于点P,Q,线段PQ的中点为G,设直线l与直线EG的斜率分别为k,
,求证:
为定值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/851a5d6ec23256f9b4a9e98aa92945fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/860884c0017c8bceb5b0edff796c144f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d7a999c36de5c9a9ce876a4a56fa34c.png)
(1)求椭圆C的方程;
(2)设直线AM,AN分别交直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f23d29646155e27b172ecdf263e2d702.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7e08d5c04f0431fb57b33a01717b599.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/612367da04a206b8b4369985c367e8f2.png)
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解答题-问答题
|
较难
(0.4)
解题方法
【推荐2】设椭圆M:
的离心率与双曲线
的离心率互为倒数,且内切于圆
.
(1)求椭圆M的方程;
(2)已知
是椭圆
上的一动点,从原点O引圆R:
的两条切线,分别交椭圆
于
两点,直线
与直线
的斜率分为
,
,试探究
是否为定值并证明你所探究出的结论.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dd54b9df3402ad91e2d34c40efe0c7a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e1fa37c4c826b5dcfebe86ab6177906.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58bb8bf0b4bed43989c8c4d158664c3e.png)
(1)求椭圆M的方程;
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/155e73a1e3cc7519cf2634eb844a0bd7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6117a7e337423136c9a5bc09e516a833.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6bce3d91ca23b86d8c6625f2632e437.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abd13974aebe38eb2a1d744a01ea5aa5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f0009063fe00277645aff1be6e32471.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/f5f6c5fd93aed88bec58002a20ea2e90.png)
您最近一年使用:0次