问题描述:
定义:log x(y)是x为底y的对数1.lg^2 (5)+lg(2)*lg(5)2.log 3(2)=m 用m表示log 32(18)写清步骤
问题解答:
1 =lg5(lg5+lg2)=lg52 log32(18)=log 2^5(2*3^2)=log2^5(2)+log2^5(3^2)=1/5+2*log2^5(3)=0.2+2*(1/log3(2^5))=0.2+1/5m思路差不多这样 答案仅供参考