数学中有许多问题涉及参数 ,分类讨论是一种重要的解题策略 ,有关的刊物也刊登过如何进行分类讨论解决含有参数问题的文章 ,但本人在长期的教学中发现有相当数量的看似需要分类讨论来解决的含参数问题 ,可以避免分类讨论 ,从而优化解题过程 .1　消去参数 ,避免分类讨论例 1　设 There are many problems in mathematics involving parameters, classification discussion is an important problem solving strategy, related publications have also published how to discuss classifications to solve the problem with the parameters of the article, but I found a considerable number of long-term teaching seemingly The parameter-containing problems that need to be discussed in a classification discussion can be avoided in the classification discussion, so as to optimize the problem solving process. 1 Eliminating parameters and avoiding the classification discussion example 1