Question

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)u_x′=φ′(x),函數(shù)y=在點(diǎn)x的對應(yīng)點(diǎn)u處有導(dǎo)數(shù)y_u′=,則復(fù)合函數(shù)y=f［φ(x)］在點(diǎn)x處有導(dǎo)數(shù)且y_x′=　　　　　.

      

Answer 1

(1)u′±v′　(2)uv′+u′v　(3)　?(4)