网址:http://m.1010jiajiao.com/timu_id_2666693[举报]
(1)log67,log76(2)log38,log20.7;
(1)log23.4,log28.5;
(2)log0.31.8,log0.32.7;
(3)loga5.1,loga5.9(a>0,a≠1).