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直线与双曲线相切有什么条件

更新时间: 2020-09-21 00:00:00     

直线与双曲线相切言外之意就是直线与双曲线只有一个公共点,将直线方程带入双曲线方程求:b的平方-4ab=0即可。或者用导数的方法,即直线与双曲线交点处导数与该直线斜率相同即可。

关键词: 直线 双曲线 相切 什么 条件

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