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Re:数列求和的纯数学方法,0msAC

Posted by 771385494 at 2013-03-23 09:04:11 on Problem 1969
In Reply To:数列求和的纯数学方法,0msAC Posted by:anjiaqi1234567 at 2012-07-22 11:32:33
m=0.5+sqrt(0.25-4*0.5*(1-t));是什么意思?没看懂

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