已知P为双曲线
上的动点,O为坐标原点,以OP为直径的圆与双曲线C的两条渐近线交于
,
两点(A,B异于点O),若
恒成立,则该双曲线离心率的取值范围为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ad29d7c31087e13e266793832af17bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6ff82ebdfad5e7de1c7487b0b817a7f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a53e311ee0b5085e7e5a45c606daa5d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ddef7fc1094028667143de29690d9a07.png)
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2023·山东·模拟预测 查看更多[3]
更新时间:2023-05-20 11:13:33
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【推荐1】设
分别为双曲线
的左、右焦点,
为双曲线的左右顶点,其中
,若双曲线的顶点到渐近线的距离为
,则双曲线的标准方程为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/882651b776851f3f0665de12da6ed47d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a67c046b573191026f4cf8f86f3bfae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a00c7f364b84038315d082ab6248467c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a8da8e1e09e1a236dc106f43a87e1b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e051d14fd6a787387995331f5e6d026.png)
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【推荐2】如图,已知双曲线C:
(
,
),过右顶点A作一条渐近线的垂线交另一条渐近线于点B,若
,则双曲线的离心率为( )
![](https://img.xkw.com/dksih/QBM/2020/7/13/2505208398012416/2505968705437696/STEM/9ebeef395c0547cfb50123b4541b3cce.png?resizew=149)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19f3fa0b40fb0d9b8c62e37316ab3b04.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67ca5fd57c2c2fcc3c7a574fdd1467d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f4184bc34537923c7e4a6e3646de173.png)
![](https://img.xkw.com/dksih/QBM/2020/7/13/2505208398012416/2505968705437696/STEM/9ebeef395c0547cfb50123b4541b3cce.png?resizew=149)
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解题方法
【推荐1】已知
为坐标原点,过双曲线
左焦点
的直线在第一、二象限交该双曲线的渐近线分别于点
,若
且
,则该双曲线的离心率为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80cffd36bf06a1feea0e703d1c33eb7a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/558bfa4f1d36c9cece14de7d81d52e20.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/002233bb2fdad8794cf09f64286e486d.png)
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解题方法
【推荐2】已知双曲线
:
(
,
)的左、右焦点分别为
、
,点
在双曲线
上,记双曲线
过一、三象限的渐近线的倾斜角为
,若直线
(
为坐标原点)的倾斜角为
,且
,则双曲线
的离心率为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19f3fa0b40fb0d9b8c62e37316ab3b04.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67ca5fd57c2c2fcc3c7a574fdd1467d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5076289823db419f94e9c0c8f4aafd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3fb78c5f885034612c0e030b920143d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.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/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aaf3369e0ea90e8d5cf4b6b3c45c0fd8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b0e27121a582de019f7d539dbd95114.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2e021cf736ab06540c2103322816462.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
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