對(duì)數(shù)的運(yùn)算法則及公式

對(duì)數(shù)運(yùn)算法則是：兩個(gè)正數(shù)的積的對(duì)數(shù)，等于同一底數(shù)的這兩個(gè)數(shù)的對(duì)數(shù)的和，即log(N·M)=logN+logM2。兩個(gè)正數(shù)商的對(duì)數(shù)，等于同一底數(shù)的被除數(shù)的對(duì)數(shù)減去除數(shù)對(duì)數(shù)的差，即log(N/M)=logN-logM。 對(duì)數(shù)的運(yùn)算法則 1、log(a) (M·N）=log(a) M+log(a) N 2、log(a) (M÷N)=log(a) M-log(a) N 3、log(a)...