定理7.设1im(x)=a,且x满足0<x-xo<61时, (x)≠a,又1imf(u)=A,则有 lim f[o(x)]=lim/(=4 x→X0 →@ 说明:若定理中l1im(x)=o,则类似可得 x→x0 1imf[(x)]=〔=4 OOo⊙⊙8 机元 定理7. 设 且 x 满足 时, (x) a, 又 则有 = → lim [ ( )] 0 f x x x 说明: 若定理中 lim ( ) , 0 = → x x x 则类似可得 = → lim [ ( )] 0 f x x x f u A u = → lim ( ) 机动 目录 上页 下页 返回 结束