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2Â¥: Originally posted by feixiaolin at 2013-12-05 22:14:23
1½×£º(-sinx+cosx)/(cosx+sinx)=1-2sinx/(cosx+sinx)
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2Â¥: Originally posted by feixiaolin at 2013-12-05 22:14:23
1½×£º(-sinx+cosx)/(cosx+sinx)=1-2sinx/(cosx+sinx)
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