a>0,a≠1,若loga2<log2a则a的取值范围
问题描述:
a>0,a≠1,若loga2<log2a则a的取值范围
答
loga2<log2 a = 1/(loga 2)
1)当a>1时,loga 2>0
(loga 2)loga (1/a)
2)a|loga 2|>1
loga 2>loga a或loga 2
1/2所以1/22