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《中学生数学》2005年3月(上)刊登的“寻找‘零件不等式’证明对称不等式”一文,读后受益匪浅.笔者研读后发现,文中的4道竞赛题还可用构造法统一证明,而且方法独特,提供了一种新的解题途径.下面仍用原文例子加以介绍,供同学们参考。
The article “Symmetric Inequality for Finding Part Inequality” published in “Middle School Mathematics” in March 2005 (better) has benefited greatly from reading. After the author’s study, he found that the four race problems in the article can also be uniformly proved by the construction method. The method is unique and provides a new way to solve problems. The following still uses the original examples to provide reference for students.