log(a)M=m,log(a)N=n,怎么得出 log(a)(M×N)=m+n

问题描述:

log(a)M=m,log(a)N=n,怎么得出 log(a)(M×N)=m+n

"根据对数运算法则:log(a)(M*N)=log(a)M+log(a)N