Thanks

回答: prove or disproveyma162009-09-19 22:44:53

I think I can use

-1=cos(PI*y) + i*sin(PI*y)

to show it.

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回复:Thanks -yma16- 给 yma16 发送悄悄话 yma16 的博客首页 (30 bytes) () 09/23/2009 postreply 07:06:43

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