函數(shù)y=xcosx-sinx的導(dǎo)數(shù)為A.xsinx B.-xsinx C.xcosx D.-xcosx分析 本題主要考查兩個函數(shù)的差的導(dǎo)數(shù)的運算法則,即兩個函數(shù)差的導(dǎo)數(shù)等于它們的導(dǎo)數(shù)的差.解 y′=′=x′cosx+x′-cosx=cosx-xsinx-cosx=-xsinx.答案 B 查看更多

 

題目列表(包括答案和解析)

函數(shù)y=xcosx-sinx的導(dǎo)數(shù)為(    )

A.xsinx              B.-xsinx              C.xcosx            D.-xcosx

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函數(shù)y=xcosx-sinx的導(dǎo)數(shù)為 

[     ]

A.xsinx
B.-xsinx
C.xcosx
D.-xcosx

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函數(shù)y=xcosx-sinx的導(dǎo)數(shù)為( )

  A.xsinx    B.-xsinx    C.xcosx    D.-xcosx

 

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函數(shù)y=xcosx-sinx的導(dǎo)數(shù)為(    )

A.xsinx               B.-xsinx               C.xcosx              D.-xcosx

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函數(shù)y=xcosx-sinx的導(dǎo)數(shù)為

A.xsinx                         B.-xsinx                            C.xcosx                        D.-xcosx

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