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ÃϾ§¾§345(feixiaolin´ú·¢): ½ð±Ò+10 2014-10-31 07:44:52
http://www.math.hawaii.edu/~pavel/bernoulli.pdf

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4Â¥: Originally posted by hank612 at 2014-10-31 08:20:30
¶Ô²»Æð ÎÒûעÒâµ½ÄãÖ»Çó¶ÔÆæÊýµÄËĴη½µÄÇóºÍ.
\frac{\pi^4}{90}=\sum_{k=0}^{\infty}\frac{1}{(2k+1)^4}+\sum_{k=1}^{\infty}\frac{1}{(2k)^4}=\sum_{k=0}^{\infty}\frac{1}{(2k+1)^4}+\frac{1}{2^4}\cdot  ...

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