如图
,
分别是椭圆C:
的左,右焦点,点P在椭圆C上,
轴,点A是椭圆与x轴正半轴的交点,点B是椭圆与y轴正半轴的交点,且
,
.
![](https://img.xkw.com/dksih/QBM/2022/1/18/2897239227531264/2901584779468800/STEM/05e6f9c7-f487-4e42-a3b3-57ca17675842.png?resizew=198)
(1)求椭圆C的方程;
(2)已知M,N是椭圆C上的两点,若点
,
,试探究点M,
,N是否一定共线?说明理由.
![](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/7dd54b9df3402ad91e2d34c40efe0c7a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0aa9a6be97b5f275d55697fd3cd0a442.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dea21ab9b8e832a52c58a974ca4e5201.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85f5864c589f96fae832f7de03539d3b.png)
![](https://img.xkw.com/dksih/QBM/2022/1/18/2897239227531264/2901584779468800/STEM/05e6f9c7-f487-4e42-a3b3-57ca17675842.png?resizew=198)
(1)求椭圆C的方程;
(2)已知M,N是椭圆C上的两点,若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac82a1271839de61ce8760420c5ea012.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df9719b7faf8f105521a954773f77149.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5076289823db419f94e9c0c8f4aafd9.png)
更新时间:2022-01-24 21:52:15
|
相似题推荐
解答题-问答题
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解题方法
【推荐1】已知椭圆
的离心率为
,
,
是C的左、右焦点,P是C上在第一象限内的一点,
关于直线
对称的点为M,
关于直线
对称的点为N.
(1)证明:
;
(2)设A,B分别为C的右顶点和上顶点,直线
与椭圆C相交于E,F两点,求四边形AEBF面积的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f88443cd69c1bd4462555de2713359cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/860884c0017c8bceb5b0edff796c144f.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/f5076289823db419f94e9c0c8f4aafd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0739793f234f8e86adc6177801ae7295.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3fb78c5f885034612c0e030b920143d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ac86e1c253297a377e14fb9a1689be8.png)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ff50d3be2e04123f7607c4d9bd31c3c.png)
(2)设A,B分别为C的右顶点和上顶点,直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/082990da1f11a1a7be4fc3935c0d526e.png)
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【推荐2】已知椭圆
的离心率为
,左右焦点分别是
,
,以
为圆心、3为半径的圆与以
为圆心、1为半径的圆相交,且交点在椭圆C上.
(1)求椭圆C的方程;
(2)过点
的直线l交椭圆于A,B两点,点D为椭圆上一点,且四边形OADB为平行四边形,求
的面积.
![](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/f5076289823db419f94e9c0c8f4aafd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3fb78c5f885034612c0e030b920143d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5076289823db419f94e9c0c8f4aafd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3fb78c5f885034612c0e030b920143d.png)
(1)求椭圆C的方程;
(2)过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb7b443d5a8c7a77ababfd924f091eb5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/866b81a8384cce4f24867baca2e6820c.png)
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【推荐1】已知椭圆
和圆
分别为椭圆
的左、右焦点,点
在椭圆
上,直线
与圆
相切.
(1)求椭圆
的方程;
(2)已知
,过T的直线与椭圆交于M,N两点,求
面积的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd486b8796b3454eab219c28ed131683.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0638a6a044b3c9696811c67983088111.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2b9ee165fff07f902ab60ee54fcb1f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acbad65b3d744b70da2480eee1cdb587.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f32c6472dd3094d126ef15ea84ff1adf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/656690e5d6fe1b44a4983086229f34ae.png)
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解答题-证明题
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较难
(0.4)
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【推荐2】如图所示,在平面直角坐标系
中,已知点
为椭圆
的上顶点.椭圆
以椭圆
的长轴为短轴,且与椭圆
有相同的离心率.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/25/6f539cdb-281a-4ef6-8291-e237716fefd5.png?resizew=180)
(1)求椭圆
的标准方程;
(2)过点
作斜率分别为
的两条直线
,直线
与椭圆
分别交于点
,直线
与椭圆
分别交于点
.
(i)当
时,求点
的纵坐标;
(ii)若
两点关于坐标原点
对称,求证:
为定值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0de61bd2c8287c6b180069c313491229.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/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/25/6f539cdb-281a-4ef6-8291-e237716fefd5.png?resizew=180)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
(2)过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90963760acac7bfad3ae03088c6c80b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44434b647ec546fe787e2164e0be6cd2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21e9feabc99f62ee569b460e61526e2e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f6f17bc385bafb37e8f964e5eb99cd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21e9feabc99f62ee569b460e61526e2e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39acab3cfb59bfc9591371721ab01d93.png)
(i)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c775e3185d8b5e93e236d991c47f69ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
(ii)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/098a3e7d1f1890863b7483a98b618119.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/02e052535d5baf2155bd798aef572531.png)
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【推荐1】已知椭圆
上右顶点到右焦点的距离为
,且右焦点到直线
的距离等于短半轴的长.
(1)求椭圆C的方程;
(2)设P(4,0),AB是椭圆C上关于x轴对称的任意两个不同的点,连接PB交椭圆C于另一点E,证明直线AE与x轴相交于定点Q;
(3)在(2)的条件下,过点Q的直线与椭圆C交于M、N两点,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad523e69a1bf925e73a22900b9855df2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/40822dc70f1fbe57e09b4bf918c8ffa7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fa5d6092f598c7da4796f965e40525a.png)
(1)求椭圆C的方程;
(2)设P(4,0),AB是椭圆C上关于x轴对称的任意两个不同的点,连接PB交椭圆C于另一点E,证明直线AE与x轴相交于定点Q;
(3)在(2)的条件下,过点Q的直线与椭圆C交于M、N两点,求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7db9b4ac9106bfaf32eba6ae265872b.png)
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【推荐2】已知椭圆
的短轴长为2,离心率为![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d5989c84e320b504511f23eeb6e7357.png)
(1)求椭圆C的方程;
(2)设过点M(2,0)的直线l与椭圆C相交于A,B两点,F1为椭圆的左焦点.
①若B点关于x轴的对称点是N,证明:直线AN恒过一定点;
②试求椭圆C上是否存在点P,使F1APB为平行四边形?若存在,求出F1APB的面积,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/8d5989c84e320b504511f23eeb6e7357.png)
(1)求椭圆C的方程;
(2)设过点M(2,0)的直线l与椭圆C相交于A,B两点,F1为椭圆的左焦点.
①若B点关于x轴的对称点是N,证明:直线AN恒过一定点;
②试求椭圆C上是否存在点P,使F1APB为平行四边形?若存在,求出F1APB的面积,若不存在,请说明理由.
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