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[组合] 一个组合证明题

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转化与化归

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转化与化归 Posted 2014-4-14 21:32 |Read mode

一个组合证明题.jpg

不用数学归纳法怎么证明？

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战巡 Posted 2014-4-14 22:26

回复 1# 转化与化归

参见forum.php?mod=viewthread&tid=2444&extra=page=6

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转化与化归

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Author| 转化与化归 Posted 2014-4-15 05:02

回复 2# 战巡
构造的妙！

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longzaifei Posted 2014-4-15 13:01

学习了！！！！！！！！！！

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