补充:若fx)连续,a(x)和b(x)可导则 F(x)=myr(m的导数F()为s: F()f[b(xb(x-fla(xla(x) b(x) F(x)=f(t t+f(tt ∫m"rm-mr(m若f(x)连续, a(x)和b(x)可导,则 F x f t dt b x a x = ( ) ( ) ( ) ( ) 补充: 的导数F (x)为: F (x)=f [b(x)]b(x)−f [a(x)]a(x) F x f t dt f t dt b x a x  = + ( ) 0 0 ( )  ( ) ( ) ( ) f t dt f t dt b x a x   = − ( ) 0 ( ) 0 ( ) ( )