prove that
3/(1!+2!+3!) + 4/(2!+3!+4!) + ... + (n+2)/(n!+(n+1)!+(n+2)!) = 1/2 - 1/(n+2)!
finite series 1
2011-11-15 3:12 am
回答 (1)
2011-11-15 4:35 am
收錄日期: 2021-04-23 23:23:58
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