Question

比较下列各组数中两个值的大小:

(1)log₂3.4,log₂8.5;

(2)log_0.31.8,log_0.32.7;

(3)log_a5.1,log_a5.9(a＞0,a≠1).

Answer 1

(1)log₂3.4＜log₂8.5;

(2)log_0.31.8＞log_0.32.7;

(3)当a＞1时,log_a5.1＜log_a5.9;

当0＜a＜1时,log_a5.1＞log_a5.9.