已知F为椭圆
的左焦点.设P是椭圆C的右准线上一点,过点P作椭圆O的两条切线
,切点分别为A,B,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53074dccec1c5d95c57e49a2fbfc1f7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/790ef3382b1c731f2885eecfd92c2a86.png)
A.![]() ![]() | B.![]() |
C.![]() | D.![]() |
更新时间:2023-08-15 08:32:09
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【推荐1】已知椭圆
的左,右焦点分别为
,
,椭圆的上顶点和右顶点分别为
,
,若
为椭圆上任意一点,且
,
关于坐标原点对称,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e36bfcf494549dc07de73b3978b8cb42.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a09a8ac969e5cec3be6abf4ff44c692e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce6758b8b074d33ea9e82818593656e1.png)
![](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/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
A.![]() |
B.椭圆上存在无数个点![]() ![]() |
C.直线![]() ![]() ![]() |
D.![]() ![]() |
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多选题
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适中
(0.65)
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【推荐2】如图,由半圆和半椭圆组成的“曲圆”,半圆的圆心是坐标原点,直径与椭圆的短轴重合,半圆所在的圆过椭圆的焦点
,且与
轴非正半轴交于点
.若过原点
的直线与上半椭圆交于点
,与下半圆交于点
,则下列结论正确的是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/17/df11fb6b-500a-4659-a26a-b2ff6355c58b.png?resizew=151)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2347bec7975dab2b8bce2fd19b1237d0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/17/df11fb6b-500a-4659-a26a-b2ff6355c58b.png?resizew=151)
A.![]() ![]() |
B.![]() ![]() |
C.![]() |
D.![]() |
您最近一年使用:0次
【推荐1】已知椭圆
和
,点
在
上,且直线
与
交于
、
两点,若点
在
上,使得
,则下列结论正确的为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f036026cd92e9ad059c3f22a7658638.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a87f5c5835dcc976ea0009d11ce07b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6bd7d594cd613385df149480dfbcefdd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/568efa7ae00715452edfec27d514e5b3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](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/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6daacbdd7db4c7c49a82072cf5e01ffe.png)
A.![]() ![]() | B.![]() |
C.直线![]() ![]() | D.四边形![]() ![]() |
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【推荐2】已知椭圆
,点
为右焦点,直线
与椭圆交于
两点,直线
与椭圆交于另一点
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/914075a4574c09bdb860d8f8f09a4e7a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa841ce5d58b64f747a3c1b69bb20a5b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5ad58997b9dc0b341c9af08f0cd1fbe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fb26d84907c923278ac4626a9d58947.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
A.![]() | B.直线![]() ![]() |
C.线段![]() | D.该椭圆离心率为![]() |
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