Question

比較下列各組數(shù)中兩個(gè)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)當(dāng)a＞1時(shí),log_a5.1＜log_a5.9;

當(dāng)0＜a＜1時(shí),log_a5.1＞log_a5.9.