如果a>0,且a≠1,M>0,N>0,那么：1、a^log(a)(b)=b 2、log(a)(a)=1 3、log(a)(MN)=log(a)(M)+log(a)(N); 4、log(a)(M÷N)=log(a)(M)-log(a)(N); 5、log(a)(M^n)=nlog(a)(M) 6、log(a)[M^（1/n）]=log(a)(M)/n 7、换底...