题目内容
(12分)比较下列各组中两个值大小
(1)
(2)
【解析】解:(1)
(2)函数上增函数且
比较下列各组中两个值的大小 :
(1)ln0.3,ln2;
(2)loga3.1,loga5.2(a>0,且a≠1);
(3)log30.2,log40.2;
(4)log3π,logπ3.
(1)log31.9,log32; (2)log0.90.1,log0.92;
(3)log35,log53; (4)log23,log0.32;
(5)logaπ,loga3.141.
(1)log0.52.7,log0.52.8;(2)log34,log65;(3)logaπ,logae(a>0且a≠1).