比较log1/2 ^3与log1/5^3的大小,
问题描述：
比较log1/2 ^3与log1/5^3的大小,
答
log1 ?what?
答
log1/2 ^3=1/log3(1/2)
log1/5^3=1/log3(1/5)
log3(1/2)>log3(1/5)
1/log3(1/2)log1/2 ^3