Question

下列各式中錯(cuò)誤的是（　�。�

A．0.83＞0.73

B．log0..50.4＞log0..50.6

C．0.75-0.1＜0.750.1

D．lg1.6＞lg1.4

Answer 1

對(duì)于A，構(gòu)造冪函數(shù)y=x³，函數(shù)是增函數(shù)，所以A正確；
對(duì)于B，對(duì)數(shù)函數(shù)y=log_0.3x，函數(shù)是減函數(shù)，所以B正確；
對(duì)于C，指數(shù)函數(shù)y=0.75^x是減函數(shù)，所以C錯(cuò)誤；
對(duì)于D，對(duì)數(shù)函數(shù)y=lgx，函數(shù)是增函數(shù)，所以D正確；
故選C．