如图,已知椭圆
,长轴长为6,离心率为
,过椭圆右焦点
作斜率不为0的直线交椭圆于
、
,过
作
垂直于直线
,连接
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/14/1285412a-c035-447c-87e4-817d66631e39.png?resizew=186)
(1)求椭圆的标准方程;
(2)证明:直线
过定点,并求出定点坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d7aea48c44781a844b5c19191f70f61.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf31876698721a199c7c53c6b320aa86.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.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/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc5adb5eb60ae4435a12d93854066298.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/090c0ba4cadbd85bf1f04f0d962eb16a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b15febfda66e733f14aa7115ed4343a8.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/14/1285412a-c035-447c-87e4-817d66631e39.png?resizew=186)
(1)求椭圆的标准方程;
(2)证明:直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf3d566704b44ea4ef1f99c37bd46902.png)
更新时间:2024-01-11 19:55:00
|
相似题推荐
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(1)求椭圆
的方程;
(2)过点
且斜率不为0的直线
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(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)过点
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【推荐2】已知椭圆C:
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【推荐1】已知椭圆
的离心率为
,左、右顶点分别为
,圆
与
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,圆
在点
处的切线被椭圆
截得的弦长为
.
(1)求椭圆
的方程;
(2)设椭圆
上两点
满足直线
与
在
轴上的截距之比为
,试判断直线
是否过定点,并说明理由.
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf298f00799cbf34b4db26f5f63af92f.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)设椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7789a500686c7a73770404ead6af0590.png)
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【推荐2】已知椭圆
:
的四个顶点围成的四边形的面积为
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(1)求椭圆
的方程;
(2)过椭圆
的右焦点
作直线
(
轴除外)与椭圆
交于不同的两点
,
,在
轴上是否存在定点
,使
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(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)过椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
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【推荐1】已知椭圆C:
的左、右焦点分别为
(-c,0),
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(1)求C的方程.
(2)设过
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,
的斜率分别为
,
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,
与C交于点D,E,
与C交于点G,H,线段DE与GH的中点分别为M,N.判断直线MN是否过定点.若过定点,求出该定点;若不过定点,请说明理由.
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(1)求C的方程.
(2)设过
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解题方法
【推荐2】已知椭圆
的焦距为
,左、右焦点分别是
,其离心率为
,圆
与圆
相交,两圆交点在椭圆
上.
(1)求椭圆
的方程;
(2)设直线
不经过
点且与椭圆
相交于
两点,若直线
与直线
的斜率之和为
,证明:直线
过定点.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7e5578ca83f5bd5c285994061b9c015.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f8dcc91c2ffb5571eaf944c34f5e8ffe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d2a97987f71835f519b462f5b8f5957.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/860884c0017c8bceb5b0edff796c144f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/663e8da70e2cc556d61e6a35a8565726.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/70d654bb00636984bcd75cc14e76e609.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
(2)设直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
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