作者plover (>//////<)
看板Math
标题[分析] 初微(1) (C. N. Apostol)
时间Fri Jul 1 22:18:54 2005
x_1 + .. +x_n
Let lim x_n = a, show that lim --------------- = a,
n->∞ n->∞ n
where a can be finite or infinite.
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1F:推 yonex:请问这五题都是Apostal的吗?140.112.253.159 07/02