已知椭圆
(a>b>0)的左、右焦点分别为F1(-c,0),F2(c,0),过点F2且斜率为
的直线l交直线2bx+ay=0于M,若M在以线段F1F2为直径的圆上,则该椭圆的离心率为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d7aea48c44781a844b5c19191f70f61.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7b9f196f4bfd166560cfef8c4d544a9.png)
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更新时间:2018-10-02 16:57:48
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【知识点】 求椭圆的离心率或离心率的取值范围
相似题推荐
单选题
|
适中
(0.65)
解题方法
【推荐1】如图,过椭圆
(
)的左焦点
的直线
交椭圆
于
两点,与
轴交于点
,若
,
,
为坐标原点,则椭圆
的离心率为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/20/47f56335-b3e7-492c-9e6b-079a50981e14.png?resizew=176)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7d72a07a4e5acfc140a3cea1f26b951.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a0c4c098615c6bc7e6dcf72e5b5201a.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/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d89cbc2874d6fc1c3128a8a8b959eac0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95c282a850bd72c8b602d1a90b70b24f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/20/47f56335-b3e7-492c-9e6b-079a50981e14.png?resizew=176)
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单选题
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适中
(0.65)
名校
【推荐2】已知椭圆
的左右焦点分别为
,O为坐标原点,P为第二象限内椭圆上的一点,且
,直线
交y轴于点M,若
,则该椭圆的离心率为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3cba824597ac1256ef641fb87346dda6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d2a97987f71835f519b462f5b8f5957.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/210020e91dbd088c72734d3f2fe58c61.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0739793f234f8e86adc6177801ae7295.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/683b665a69358b8c62ef16a246025b55.png)
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您最近一年使用:0次