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[几何] 请教一道圆锥曲线的问题

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数学小黄 Posted at 2013-10-11 08:57:42 |Read mode
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其妙 Posted at 2013-10-11 13:22:07
搞变式是很好的,但是有一个度吧?
不过,无拘无束,才有可能发现真理?
唉,难办。
妙不可言,不明其妙,不着一字,各释其妙!

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 Author| 数学小黄 Posted at 2013-10-12 19:28:30
回复 2# 其妙


    学生问到了这问题,不得不回答啊

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