已知点
在双曲线
上,直线l交C于P,Q两点,直线
的斜率之和为0,若
,则
的面积为__________________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39ea1f5bdd213c7c3a571b4c38850bf1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5bef93a53a2004910a8cac32f93c4b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5671fb25040a712a49e8c8148d67d300.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4bda4c90465ef329bdf24e658703a59.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c499b1f470978c4f8cc05ffdebc2e961.png)
2024高三·全国·专题练习 查看更多[1]
(已下线)专题02 圆锥曲线中的求值问题(三大题型)
更新时间:2024-05-23 17:21:51
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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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名校
解题方法
【推荐1】如图,在
中,
,点
为
的中点,点
为线段
垂直平分线上的一点,且
,固定边
,在平面
内移动顶点
,使得
的内切圆始终与
切于线段
的中点,且
在直线
的异侧,在移动过程中,当
取得最大值时,
的面积为___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/179d7920ec6cd22f3a0cfa6738260153.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
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【推荐2】已知椭圆
与双曲线
有公共焦点
,
为
与
的一个交点,
,椭圆
的离心率为
,双曲线
的离心率为
,若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1db6abca6f67e3be488fb556ef8d1ee6.png)
_______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/afb6101e45f8d7013bc3dc4197188c0c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6acfc9319b4dfcefd8f0bb0338f7cbf2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/50da60823b387df26f73e7c2bad6fcdf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/afb6101e45f8d7013bc3dc4197188c0c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6acfc9319b4dfcefd8f0bb0338f7cbf2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2328dd61f5117580006176fd96e5774.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/afb6101e45f8d7013bc3dc4197188c0c.png)
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