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pizi7880

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Originally posted by ppttcug at 2009-11-27 09:48:
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Originally posted by kevinsun17 at 2009-11-28 23:50:
ÄÜÏêϸ½âÊÍÒ»ÏÂexp(iEt)ÄǸö¾¿¾¹ÊÇÔÚÄÇôÇ÷ÓÚ0Âð?
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So Trivial !
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