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pxchg1200 posted 2013-9-22 15:13 |Read mode
Prove that
\[\int_{0}^{\infty}{\left(\sum_{k=0}^{\infty}{\frac{(-1)^{k}P_{k+1}}{k!}x^{k}}  \right)dx}=2 \]
$P_{k+1}$ means the number $k+1$ prime number,note $P_{1}=3$
(tian275461)
Let's solution say the method!

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hbghlyj posted 2022-9-14 11:33
原来出题人在论坛上
@tian27546西西

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hbghlyj posted 2024-9-4 18:10
更多讨论请参阅...
1# kastin; 43454242014-5-28 14:40:08. 刚在这里看到的题目http://kuing.orzweb.net/viewthread.php?tid=272&extra=page%3D3
\[\int_{0}^{\infty}{\left(\sum_{k=0}^ ...

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