过双曲线
的右支上任意一点
作一直线l与两条渐近线交于点A、B.若P为AB的中点,证明:
(1)直线l与双曲线只有一点交点;
(2)△OAB的面积为定值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/565bc68d208cd5e0c90a32851faf3814.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7775aa57ca0e62216f3039ed88dceed0.png)
(1)直线l与双曲线只有一点交点;
(2)△OAB的面积为定值.
更新时间:2018-12-06 18:58:27
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【知识点】 圆锥曲线
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