化归思想在解题中运用广,因而对不同的问题建模要灵活,转化要恰当.尽管题目千变万化,但只要对题目的结构进行分析,选择适当的模型进行化归,就能有效地将难题转化为易题,熟题,找到解题的思路,简化解题过程.本文试举几个在解方程中运用的例子: The idea of ​​return to origin is widely used in problem solving, so the modeling of different problems should be flexible and transformation must be appropriate. Although the topics are ever-changing, as long as the analysis of the structure of the topics, the selection of appropriate models for transformation can effectively The puzzles translate into easy questions, familiar questions, finding ideas for solving problems, and simplifying the problem solving process. Here are a few examples to use in solving equations: