名校
1 . 已知椭圆
的离心率为
,过右焦点F与长轴垂直的直线与椭圆在第一象限相交于点M,
.
(1)求椭圆C的标准方程;
(2)斜率为1的直线l与椭圆相交于B,D两点,若以线段BD为直径的圆恰好过坐标原点,求直线l的方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c4294843dc627c5063a09ab944b5dfd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f78c38805c09dcfbcc42103308975a74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6cd21197986501a84f77c3d7881657ad.png)
(1)求椭圆C的标准方程;
(2)斜率为1的直线l与椭圆相交于B,D两点,若以线段BD为直径的圆恰好过坐标原点,求直线l的方程.
您最近一年使用:0次
2020-01-07更新
|
188次组卷
|
2卷引用:黑龙江省哈尔滨师范大学附属中学2019-2020学年高二上学期期中考试数学试题
名校
2 . 已知斜率等于
的直线
和椭圆
交于
两点,
为坐标原点.
(1)设点
是线段
的中点,当直线
经过椭圆的右焦点
时,求直线
的斜率;
(2)当
时,求直线
的方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/271e595c257e4c0ade90a9bbbf0e6b0d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e52586ca2a3b783bc8092415e2d4bf6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
(1)设点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aaf3369e0ea90e8d5cf4b6b3c45c0fd8.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f8451374f8ef6fe1ac819068d8f3a5e2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
您最近一年使用:0次
3 . 已知椭圆
:
离心率为
,且经过点
.
(1)求椭圆方程;
(2)直线
交椭圆于
,
两点,当
面积等于
时,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dd54b9df3402ad91e2d34c40efe0c7a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d5989c84e320b504511f23eeb6e7357.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/448c0a5ee776d19ce8e42ac9a5fd27c4.png)
(1)求椭圆方程;
(2)直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1d0aafd52e26c241c46d0206f42f415.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5a9fc2dda89829fa2c610a8fce86d22.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/044468f3733869bd186eb663ff0bb371.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
您最近一年使用:0次
名校
4 . 已知椭圆
中心在原点,焦点在坐标轴上,直线
与椭圆
在第一象限内的交点是
,点
在
轴上的射影恰好是椭圆
的右焦点
,椭圆
的另一个焦点是
,且
.
(1)求椭圆
的方程;
(2)直线
过点
,且与椭圆
交于
,
两点,求
的面积的最大值及此时
内切圆半径.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a02430f83e4f662e788d234da3c56ce2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.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/f5076289823db419f94e9c0c8f4aafd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23ce3522ba092cf2f67dd5c2ad2f32ac.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a2a5e336b6bcba6354fd366c892dd06.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/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4b47995e30fd26ebc6cbf3ca48979ed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4b47995e30fd26ebc6cbf3ca48979ed.png)
您最近一年使用:0次
名校
5 . 已知
的两个顶点为
,
,平面内P,Q同时满足
;
;
.
求顶点A的轨迹E的方程;
过点
作两条互相垂直的直线
,
,直线
,
被点A的轨迹E截得的弦分别为
,
,设弦
,
的中点分别为M,
试问:直线MN是否恒过一个顶点?若过定点,请求出该顶点,若不过定点,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e428e7a09732be85c1224e9c8f6a71c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/408ff0716718d8d85ca02bf29e04f2ec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e19833fdc4c36aa48cb3d0388be994b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fda76cae3833856c83f2b20de6446ac8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb38523cc792a440e6abb5ff47789373.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/798f50a2fba2dc70b257d5e788fd85c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4141b26d2c32655003494a91ad6331b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65863c1abad833b79c303bfca24f535c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9963b39f135bfeca3de65460c94546c4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd8f64ebec4a71a609204458cc54df82.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eea5c8fe935beac660eda538e59cd43f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd8f64ebec4a71a609204458cc54df82.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eea5c8fe935beac660eda538e59cd43f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc689a0bf91e6384ca0bd3fb3fbfa0ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b41d95f9da0a01f1d66eaad79f551e22.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc689a0bf91e6384ca0bd3fb3fbfa0ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b41d95f9da0a01f1d66eaad79f551e22.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cca556f98c82b70c177d41cc31b217c.png)
您最近一年使用:0次
名校
6 . 在平面直角坐标系
中,已知椭圆C:
(
>
>0)的右焦点为F(1,0),且过点(1,
),过点F且不与
轴重合的直线
与椭圆C交于A,B两点,点P在椭圆上,且满足
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/5/0bc1c0f8-c908-43f3-9761-2a389881e54f.png?resizew=220)
(1)求椭圆C的标准方程;
(2)若
,求直线AB的方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d7aea48c44781a844b5c19191f70f61.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4b8503f4706b8321e4e79a87eadea84.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/117f765580d8dd75713229f1a2ba0178.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/5/0bc1c0f8-c908-43f3-9761-2a389881e54f.png?resizew=220)
(1)求椭圆C的标准方程;
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3137f547ed45102f2756dc127fa58a00.png)
您最近一年使用:0次
2019-12-23更新
|
413次组卷
|
3卷引用:江苏省南通市西亭高级中学2019-2020学年高三下学期学情调研数学试题
名校
7 . 如图,
为椭圆
上的一个动点,弦
分别过椭圆的左焦点
和右焦点
,当
垂直于
轴时,恰好有![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82b6ea83a37b6e88a87df84781dd05aa.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/1/39c96b2f-8220-4658-b746-2ba2d853b4a8.png?resizew=189)
(1)求椭圆的离心率
;
(2)设
试判断
是否为定值?若是,求出这个定值;若不是,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48da128547c4cf9745e8e4b99988a3db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dec2ca6438c82b43f746057d8129885.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/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82b6ea83a37b6e88a87df84781dd05aa.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/1/39c96b2f-8220-4658-b746-2ba2d853b4a8.png?resizew=189)
(1)求椭圆的离心率
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/168b3e4b1d6f04226fa2687a72a268b4.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45f2007d6e96c48a88b872b69ed3ade6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32705e629d8b9187b53efeee6605af15.png)
您最近一年使用:0次
2019-12-16更新
|
312次组卷
|
2卷引用:江苏省镇江市江都中学、扬中市高级中学2019-2020上学期高二数学第三次联合测试
解题方法
8 . 如图,已知椭圆
,斜率为﹣1的直线与椭圆C相交于A,B两点,平行四边形OAMB(O为坐标原点)的对角线OM的斜率为
,则椭圆的离心率为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/6/97fba536-07d4-4374-9252-719331a292d9.png?resizew=207)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c4294843dc627c5063a09ab944b5dfd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb84f6fbac102ccf326b2223d69cb7cc.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/6/97fba536-07d4-4374-9252-719331a292d9.png?resizew=207)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2019-12-15更新
|
941次组卷
|
2卷引用:浙江省浙东北联盟(ZDB) 2019-2020学年高二上学期期中数学试题
9 . 已知椭圆
的长轴两端点为
,
,离心率为
,
,
分别是椭圆
的左,右焦点,且
.
(1)求椭圆的标准方程;
(2)设
,
是椭圆
上两个不同的点,若直线
在
轴上的截距为
,且
,
的斜率之和等于
,求直线
的方程.
![](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/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/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4d5f71d462d36e62cd92b07262998e3.png)
(1)求椭圆的标准方程;
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8860d9787671b53b1ab68b3d526f5ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4113c492885ba7c47fe42ac792578f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b90e0f35eda1a729fed485f83da5ea9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8860d9787671b53b1ab68b3d526f5ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
您最近一年使用:0次
10 . 已知曲线
上任意一点
到点
的距离比它到直线
的距离小1, 已知过
的两条直线
的斜率之积为1,且
分别交曲线
于
两点和
两点,
(1)求曲线
的方程;
(2)求
的最小值.
![](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/880cddd51d80dbd995cc714f26f923e4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b556b1a9944719cf423e90f8df16c773.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44434b647ec546fe787e2164e0be6cd2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44434b647ec546fe787e2164e0be6cd2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e08ad1f98c449b3f60d700d0ae2fecc0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3dbe4abebeeff90b658f6f4f3648af3.png)
(1)求曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df6d243e1e67c479b5c8963eda9d70ae.png)
您最近一年使用:0次