以8为底9的对数乘上以27为底8的对数等于多少

1个回答

log(8)9 * log(27)8
=log(2^3)3^2 * log(3^3)2^3
=2/3 * log(2)3 * 3/3 * log(3)2
=2/3 * 1
=2/3