大部分偶數(shù)函數(shù)不存在反函數(shù)(當函數(shù)y=f，定義域為，f=C(其中C為常數(shù))，則函數(shù)f為偶數(shù)且有反函數(shù)，其反函數(shù)的定義域為{C},反函數(shù)公式:DG/Dy=DX/Dy，反函數(shù)的導數(shù)是反函數(shù)的導數(shù)是原函數(shù)導數(shù)的倒數(shù),如果存在奇函數(shù)反函數(shù)，則其反函數(shù)也是奇函數(shù)。1、反函數(shù)的導數(shù)公式反函數(shù)公式:DG/Dy=DX/Dy，反函數(shù)的導數(shù)是反函數(shù)的導數(shù)是原函數(shù)導數(shù)的倒數(shù)。反函數(shù)是相互唯一的；一個函數(shù)在其反函數(shù)對應區(qū)間內(nèi)是單調(diào)的。大部分偶數(shù)函數(shù)不存在反函數(shù)(當函數(shù)y=f，定義域為，f=C(其中C為常數(shù))，則函數(shù)f為偶數(shù)且有反...