解题方法
1 . 已知椭圆
,斜率为2的直线
与椭圆交于
两点.过点
作
的垂线交椭圆于另一点
,再过点
作斜率为
的直线交椭圆于另一点
.
(1)若
为该椭圆的上顶点,求点
的坐标;
(2)证明:直线
的斜率为定值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/271e595c257e4c0ade90a9bbbf0e6b0d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274a9dc37509f01c2606fb3086a46f4f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
(2)证明:直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
您最近一年使用:0次
2023-03-25更新
|
258次组卷
|
3卷引用:广西壮族自治区玉林市2023届高三二模数学(文)试题
名校
解题方法
2 . 如图,已知椭圆
,双曲线
,若以椭圆
的长轴为直径的圆与双曲线
的一条渐近线交于A,B两点,且椭圆
与该渐近线的两交点将线段AB三等分,则双曲线
的离心率为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/28/1122fbce-7a6c-4b62-8543-bdbbbe1d5889.png?resizew=190)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93c0e2dea2f22992b0f4e8400b13af18.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c64acf2cf103416ef9fdfbd01933f39c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.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/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/28/1122fbce-7a6c-4b62-8543-bdbbbe1d5889.png?resizew=190)
A.9 | B.5 | C.![]() | D.3 |
您最近一年使用:0次
2022-02-13更新
|
361次组卷
|
2卷引用:广西容县高级中学2021-2022学年高二下学期开学考试数学(理)试题
名校
3 . 椭圆
上的点到直线
距离最近的点的坐标为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/271e595c257e4c0ade90a9bbbf0e6b0d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cf6454c3c2f8b932f360ed40c459f30.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2020-10-07更新
|
521次组卷
|
5卷引用:广西玉林师院附中、玉林十一中等五校2020-2021学年高二上学期期中考试数学(文)试题
4 . 平面上两定点
,动点
满
(
为常数).
(Ⅰ)说明动点
的轨迹(不需要求出轨迹方程);
(Ⅱ)当
时,动点
的轨迹为曲线
,过
的直线
与
交于
两点,已知点
,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f49644cd9fa4688cc3a74a234952530.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45cd114b19051515fb03004ee386c713.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(Ⅰ)说明动点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
(Ⅱ)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e258ab9e600435b37465092243d99f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.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/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f397a4a9aa5728d9fca4ca6c73789c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4802e01921e979756acc33fed2a4f5c.png)
您最近一年使用:0次
5 . 已知椭圆
的焦距为
,离心率为
,其右焦点为
,过点
作直线交椭圆于另一点
.
(Ⅰ)若
,求
的面积;
(Ⅱ)若过点
的直线与椭圆
相交于两点
、
,设
为
上一点,且满足
(
为坐标原点),当
时,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad523e69a1bf925e73a22900b9855df2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38387ba1cadfd3dfc4dea4ca9f613cea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d5989c84e320b504511f23eeb6e7357.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f9199b50dd0036be9b764c621d1d46f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
(Ⅰ)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3ffbd9c3b7ef0976934a48649eaf31a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b929a31d169a811004f0ecd6b7984e61.png)
(Ⅱ)若过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92a0d4c22734cac795de1e5c5fbefa87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ffcf2bd7725928e78b206c769e7b1b86.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33e6c9323b73f241c2f019e4d8f2b7c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3055bd5330bd6c42626d1ff77e406b92.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
您最近一年使用:0次