证明非严格对称不等式的有用技巧张光华（四川阆中东风中学６３７４００）明，技巧性强，方法多样．本文给出证明一些非严格对称不等式的技巧——“取等匹配”．其要点是：根据待证不等式的取等号的条件和结构特征，进行“凑项”或“嵌式（数）”，为运用算术——几何平均... Proof of non-strict symmetric inequalities useful techniques Zhang Guanghua (Sichuan Middle East Middle School 637400) Ming, strong skills, methods and diverse. This paper presents a technique to prove some non-strictly symmetric inequalities - “take equal matches.” The main point is: according to the conditions and structural characteristics of the inequality of the inequality, “combine terms” or “embedded (number)” is used to apply arithmetic-geometric average...