椭圆的焦点分别是F1和F2,已知椭圆的离心率 .过中心O 作直线与椭圆交于A,B两点,O为原点,若△ABF2的面积是20。 (1)求m的值; ...

作者: tihaiku 人气: - 评论: 0
问题 椭圆的焦点分别是F1和F2,已知椭圆的离心率 .过中心O 作直线与椭圆交于A,B两点,O为原点,若△ABF2的面积是20。 (1)求m的值; (2)直线AB的方程。
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