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筝筝日上

银虫 (著名写手)

[求助] 在线等,本人时间不多了

师大学子,jfili,pengyehui,还有版主,快来解答~~~
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筝筝日上

银虫 (著名写手)

这个是要对n从1到无穷求和是吧?
2楼2011-06-09 15:38:01
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soliton923

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引用回帖:
Originally posted by 筝筝日上 at 2011-06-09 15:38:01:
这个是要对n从1到无穷求和是吧?




[ Last edited by soliton923 on 2011-6-9 at 16:00 ]
soliton;sato-theory;algebre-geometry;Random-Matrices-Theory; Riemann-Hilbert method
3楼2011-06-09 15:58:15
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筝筝日上

银虫 (著名写手)

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soliton923(金币+1): 呵呵~~应该不是哈~~要是是的话,那么这个级数就是发散了啊~~你能求前n项的和来?? 2011-06-09 16:12:20
引用回帖:
Originally posted by soliton923 at 2011-06-09 15:58:15:



[ Last edited by soliton923 on 2011-6-9 at 16:00 ]

那就不是从1到无穷了,而是对an当n趋于无穷时求极限,这个用等价无穷小我也会
4楼2011-06-09 16:09:33
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