设双曲线
的焦点为
,点
为
上一点,
,则
为_____ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0265d840697149a5ece859c99b3468dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d2a97987f71835f519b462f5b8f5957.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5357841daf522e6adcb7e0f9fccedef5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96fa27f8db6167d4802a510371077bb5.png)
21-22高二上·安徽六安·期末 查看更多[3]
更新时间:2022-02-28 01:15:58
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【知识点】 利用双曲线定义求点到焦点的距离及最值
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容易
(0.94)
【推荐1】已知双曲线
上一点
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的距离为
,则
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5578cdabc568c925c952d3b6d81f7798.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
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【推荐2】已知双曲线
,双曲线C上一点P到一个焦点的距离为15,则P到另一个焦点的距离为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67a8bc1791a9c09bde4866854f67a2a3.png)
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