基本不等式是高中阶段一个重要的不等式,经常作为中间环节出现在考题中.对于基本不等式的可思考范围也相当广,本文笔者就从三个角度谈谈对基本不等式的认识.一、元数可推广我们课本学的基本不等式是a+b≥2(ab)~(1/2)(a≥0,b≥0,当且仅当a=b时取等号),但如果我们遇到求a+b+c+d(a,b,c,d≥0)最小值,可能会考虑到基本不等式适 Basic inequality is an important inequality in high school and often appears as an intermediate link in the test.As for the basic inequality, the range of thinking is quite wide, so the writer talks about the basic inequality from three perspectives. The basic inequalities that popularize our textbook are a + b≥2 (ab) ~ (1/2) (a≥0, b≥0 if and only if a = b), but if we encounter a + b + c + d (a, b, c, d ≥ 0) minimum, may take into account the basic inequalities