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Re:请问这个公式是怎么得出来的啊?

Posted by slp at 2010-08-01 14:49:50 on Problem 3604
In Reply To:Re:请问这个公式是怎么得出来的啊? Posted by:slp at 2010-08-01 14:47:56
http://hi.baidu.com/sulipol/blog/item/0ace8af56765aad4f3d385ee.html
能力有限,不知证明的有无错误

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