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这个逻辑是反了吧?推出来一个数学表达式,反过来去推初始条件~~~~~荒谬~~,照那样负数也是有解的,只是负解罢了

Posted by achilles at 2005-07-29 08:42:50 on Problem 2506
In Reply To:0本来就该是1,有什么奇怪的。 Posted by:tdzl2003 at 2005-07-27 20:51:54
> 公式是这样的,f(n)=f(n-1)+2*f(n-2)
> f(1)是1,f(2)是3,f(0)不就是1了么:D

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