對(duì)數(shù)運(yùn)算法則及公式
2025-12-15
1.同底數(shù)對(duì)數(shù)相加，底數(shù)不變，真數(shù)相乘。 2.同底數(shù)對(duì)數(shù)相減，底數(shù)不變，真數(shù)相除。 3.對(duì)數(shù)的運(yùn)算法則是進(jìn)行同底的對(duì)數(shù)運(yùn)算的依據(jù)，對(duì)數(shù)的運(yùn)算法則是等式兩邊都有意義的恒等式。如果a>0,且a≠1，m>0，N>0,那么： 1.兩個(gè)正數(shù)乘積的對(duì)數(shù)等于這兩個(gè)基數(shù)相同的數(shù)的對(duì)數(shù)之和2.兩個(gè)正數(shù)的商的對(duì)數(shù)等于同底數(shù)被除數(shù)的對(duì)數(shù)和除數(shù)的對(duì)數(shù)之差正冪的對(duì)數(shù)等于該冪的底數(shù)的對(duì)數(shù)乘以該冪的指數(shù)4...