已知椭圆C:
的左顶点为A,右焦点为F,过点A作斜率为
的直线与C相交于点A,B,且
,O为坐标原点.
(1)求椭圆C的离心率;
(2)若
,过点F作与直线AB平行的直线l,l与椭圆C相交于P,Q两点,求直线OP的斜率与直线OQ的斜率的乘积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dd54b9df3402ad91e2d34c40efe0c7a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/827ccf0c04aa941ba20d5f4c6068b46b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ed285b1d0a7c3e8acf6e5af53265121.png)
(1)求椭圆C的离心率;
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a3c442579603164f3fc19458677d307.png)
更新时间:2022-08-08 16:38:36
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【推荐1】焦距为
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成等差数列,称
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(1)求
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(3)设点
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为椭圆上异于
点的任一点,
为
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的对称点(
也异于
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为直径的圆是否过定点?说明理由.
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(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bcd8ee2d8367c167d6ae0abc741b6b8.png)
(2)过
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0cfedfa5cc6b32402e5388c012ef61dc.png)
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(3)设点
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【推荐2】已知原点到椭圆C:
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(1)求椭圆C的离心率;
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【推荐1】如图,已知椭圆C:
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(1)求椭圆的方程;
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于点M,记PA,PB,PM的斜率分别为k1,k2,k3.问:是否存在常数
,使得k1+k2=
k3?若存在,求出
的值;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48da128547c4cf9745e8e4b99988a3db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/860884c0017c8bceb5b0edff796c144f.png)
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![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/1/fbee9baf-e6bd-44cd-abdb-75caa5e4b243.png?resizew=225)
(1)求椭圆的方程;
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【推荐2】已知椭圆
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(1)求
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