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Re:这题怎么做？公式怎么推呢？还是用二分？In Reply To:这题怎么做？公式怎么推呢？还是用二分？ Posted by:dearboy at 2005-09-11 10:02:43 > 请达人指教，谢谢． a[1]=a[0]+(a[n+1]-a[0]-2*(c[n]+2*c[n-1]+...+j*c[n+1-j]+...+n*c[1]))/(n+1) Followed by: Post your reply here: |
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