石豆豆要加油 發(fā)表于 2015-9-4 17:27
應(yīng)該是對q求導(dǎo)吧,k=0是是常數(shù),導(dǎo)數(shù)為0
石豆豆要加油 發(fā)表于 2015-9-4 17:27
應(yīng)該是對q求導(dǎo)吧,k=0是是常數(shù),導(dǎo)數(shù)為0
考研者屢 發(fā)表于 2015-9-4 17:32
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