(log27^4)*(log8^9=这是我想的转指数3^3x=2^2 2^3x=3^2 x=2/3 x*x=4/9用对数怎么计算
问题描述:
(log27^4)*(log8^9=
这是我想的转指数
3^3x=2^2 2^3x=3^2 x=2/3 x*x=4/9
用对数怎么计算
答
log27^4=2/3log3^2,
log8^9=2/3log2^3,
所以(log27^4)*(log8^9)=4/9(log3^2)(log2^3)=4/9.