已知点P为双曲线
右支上一点,
分别为双曲线的左右焦点,且
,I为△
的内心,若
成立,则
的值为___________ .
![](https://img.xkw.com/dksih/QBM/2016/11/3/1573116099321856/1573116105416704/STEM/eb265c72495a4334964884f562dd1677.png?resizew=164)
![](https://img.xkw.com/dksih/QBM/2016/11/3/1573116099321856/1573116105416704/STEM/d94c2248b57b48e5a125951d5e805396.png?resizew=40)
![](https://img.xkw.com/dksih/QBM/2016/11/3/1573116099321856/1573116105416704/STEM/01d1fb2036464cf2a74ec0ec00065a6e.png?resizew=78)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd5a8e1bc9748e5519dcd9981b7eb251.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2231632b39e600e8cd5a9aac9c7e0dc.png)
![](https://img.xkw.com/dksih/QBM/2016/11/3/1573116099321856/1573116105416704/STEM/967187c60242433a9c59375154ef95a2.png?resizew=15)
![](https://img.xkw.com/dksih/QBM/2016/11/3/1573116099321856/1573116105416704/STEM/69de7034-3bc5-4551-af3f-560ff2216e35.png)
更新时间:2016-12-04 23:35:49
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【知识点】 求双曲线中三角形(四边形)的面积问题
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【推荐1】已知双曲线
的左右焦点分别为
过
的直线与双曲线右支交于A,B两点,且
则
的面积为_____ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49879aa7378c9728fe508df81ac00ebe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf56a7eb7cf44143f7275ad8f61be1b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3fb78c5f885034612c0e030b920143d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e2bc9d21877482133d73a767ea68c98.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/28e136b1fb5fa8e804a8d69bb094e6a1.png)
您最近一年使用:0次
【推荐2】已知
为双曲线
上一点,以
为切点的切线为
,直线
与双曲线
的两条渐近线分别交于点
,则
(
为坐标原点)的面积为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dad0c75ce33673ec4c425896e8619e4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.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/7789a500686c7a73770404ead6af0590.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25dd698d57d1cf239eb8752aecaaa4f4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
您最近一年使用:0次