有關2exsinx的精選大全

設y=-2exsinx,則y′等於(  )A.-2excosx                        ...
問題詳情:設y=-2exsinx,則y′等於()A.-2excosx                         B.-2exsinxC.2exsinx                              D.-2ex(sinx+cosx)【回答】D知...
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