(log(a)/(N))/(log(a)/(M))=?

问题描述:

(log(a)/(N))/(log(a)/(M))=?
小生水平有限 望大师讲解的精细一点

这个是换底公式 (log(a)/(N))/(log(a)/(M))=log(M)(N) 推论是log(a)(b)*log(b)(a)=1