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椭圆直线中点斜率公式
更新时间: 2021-02-08 07:38:56  

1、椭圆为例,椭圆方程x^2/a^2+y^2/b^2=1,(a>b>0)。

2、设直线l与椭圆交于A(x1,y1),B(x2,y2),中点N(x0,y0)。

3、x1^2/a^2+y1^2/b^2=1。

4、x2^2/a^2+y2^2/b^2=1 。

5、双曲线中点弦斜率 b^2* x0/(a^2* y0)。

关键词: 椭圆 直线 中点 斜率 公式

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