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Re:无聊的数学题，推导如下In Reply To:Re:无聊的数学题，推导如下 Posted by:Eli_love at 2009-06-06 16:18:39 “CRw(sin(wt+b)-sin(wt))=Vr*cos(wt+b)”你这个求导错了 我求导的结果是：CWR(Vr*sin(wt+q)-Vs*sin(wt))=Vr*cos(wt+q) <q与你的b是一样的> Followed by:
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