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Mathematics


求 $\sum_{k=1}^{+\infty}\frac{1}{k(k+1)(k+2)\cdots(k+n)}$.

Posted by haifeng on 2013-12-30 08:52:34 last update 2013-12-30 08:54:04 | Edit | Answers (0)

即求极限

\[\lim_{m\rightarrow\infty}\sum_{k=1}^{m}\frac{1}{k(k+1)(k+2)\cdots(k+n)}\]

 


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