标题: [数学] 2007-11-27 初预 [打印本页]

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作者: 老猫    时间: 2007-11-27 09:52     标题: 2007-11-27 初预

[attach]93585[/attach].

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作者: sywgfx    时间: 2007-11-27 12:52

=1-1/2+1/2-1/4+1/4-1/8+........+1/256-1/512=1-1/512=511/512.

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