题目内容：

log以3为底1/16的对数xlog以5为底1/9的对数怎么算

优质解答

答案：
log3(1/16) xlog5(1/9)
=(-4)log3(2)x(-2)log5(3)
=8lg2/lg3xlg3/lg2
=8lg3/lg2
=8log2(3)