8.復(fù)合函數(shù)的導(dǎo)數(shù):設(shè)函數(shù)u=(x)在點(diǎn)x處有導(dǎo)數(shù)u′x=′(x).函數(shù)y=f(u)在點(diǎn)x的對(duì)應(yīng)點(diǎn)u處有導(dǎo)數(shù)y′u=f′(u).則復(fù)合函數(shù)y=f( (x))在點(diǎn)x處也有導(dǎo)數(shù).且 或=f′(u) ′(x). 查看更多

 

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設(shè)f(x)是可導(dǎo)函數(shù),求下列復(fù)合函數(shù)的導(dǎo)數(shù):

(1)y=f(lnx);

(2)y=lnf(x)  (f(x)>0).

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函數(shù)和差積商的導(dǎo)數(shù)及復(fù)合函數(shù)的導(dǎo)數(shù)?

       (1)(u±v)′=     ;?

       (2)(uv)′=     ;?

       (3)()′=     ;?

       (4)設(shè)函數(shù)u=φ(x)在點(diǎn)x處有導(dǎo)數(shù)ux′=φ′(x),函數(shù)y=在點(diǎn)x的對(duì)應(yīng)點(diǎn)u處有導(dǎo)數(shù)yu′=,則復(fù)合函數(shù)y=f[φ(x)]在點(diǎn)x處有導(dǎo)數(shù)且yx′=     .

      

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求復(fù)合函數(shù)的導(dǎo)數(shù)

(1)ysin2xcos(2x1)3 (2)y

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求下列函數(shù)的導(dǎo)數(shù)(先設(shè)中間變量,再求導(dǎo)).

(1)y=(5x-3)4

(2)y=(2+3x)5

(3)y=(2-x2)3

(4)y=(2x3+x)2

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求復(fù)合函數(shù)的導(dǎo)數(shù)

(1)ysin2xcos(2x1)3 (2)y

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