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[几何] 解析几何（双曲线率心率范围）

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lrh2006 Post time 2016-4-11 15:21 |Read mode

求指点，谢谢各位！

双曲线, 离心率

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Author| lrh2006 Post time 2016-4-12 08:37

有人吗？可否帮帮我呀？

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榕坚 Post time 2016-4-12 15:12

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Author| lrh2006 Post time 2016-4-12 23:14

回复 3# 榕坚
明白了，谢谢咯！我得出比例式后绕在里面了，你怎么就能想到这样变形呢，厉害！

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游客 Post time 2016-4-19 16:18

未命名.PNG

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