1.2.7 冪指函數(shù)

對(duì)于函數(shù)y=u(x)v(x),(u(x)>0,u(x)≠1),若u(x),v(x)都不是常值函數(shù),則它既不是冪函數(shù)也不是指數(shù)函數(shù),我們稱它為冪指函數(shù).利用對(duì)數(shù)恒等式,冪指函數(shù)可以轉(zhuǎn)化成u(x)v(x)=ev(x)lnu(x),由此可以看出冪指函數(shù)是初等函數(shù). ......（本文共 132 字 ）     [閱讀本文] >>