【導(dǎo)讀】時(shí),下列做法是否正確?,)(0及其鄰域內(nèi)有界在又xx?即反函數(shù)的導(dǎo)數(shù)等于直接函數(shù)導(dǎo)數(shù)的倒數(shù).的單調(diào)性可知由)(xfy?,)2,2(sin內(nèi)單調(diào)、可導(dǎo)在?????證,)(0可導(dǎo)在點(diǎn)由uufy?,)()(00連續(xù)在點(diǎn)可導(dǎo)在點(diǎn)由xxuxxu?????例8.sinln的導(dǎo)數(shù)求函數(shù)xy?