分类讨论是一种重要的数学思想和解题策略,在中学数学学习中有重要的位置.当然,由于分类讨论,也难免使得问题的解决过程变得繁杂冗长.因此,我们又希望避免解题过程中的分类讨论.事实上,解决某些数学问题,之所以要分类讨论,常常是囿于我们所选择的解题视角,而不是问题本身的缘故. Classification discussion is an important mathematical thought and problem-solving strategy, which plays an important role in middle school mathematics learning.Of course, due to the classification discussion, it is inevitable to make the problem solving process complicated and lengthy.Therefore, we also hope to avoid solving problems In fact, to solve some mathematical problems, the reason why we should discuss the classification is often due to the problem-solving perspective we choose, not the problem itself.