自然对数计算器在线(自然对数计算器)
loga(MN)=logaM+logaN; loga(M/N)=logaM-logaN; loga(M^n)=nlogaM; a^(log(a)(b))=b log(a)(MN)=log(a)(M)+log(a)(N); log(a)(M÷N)=log(a)(M)-log(a)(N); log(a)(M^n)=nlog(a)(M) log(a^n)M=1/nlog(a)(M) 自然对数与换底公式: http://wenku.baidu.com/view/6218aa768e9951e79b89276e.html。