数学课本上的知识点是有限的,但是习题是千变万化的,同一个知识点可以从不同角度、不同侧面、不同层次以不同形式来考查.解题过程往往是应用所学知识,解决以“新面孔”出现的习题,而很多同学在面对“新面孔”时往往无从下手,因考虑不周全、理解有偏差等原因,导致错解.下面对函数部分进行梳理,并提出一些对策.希望本文可以对同学们一诊考试有所帮助. The knowledge points in mathematics textbooks are limited, but the exercises are ever-changing, and the same knowledge point can be examined in different forms from different angles, different sides, and different levels. The problem-solving process is often the application of what is learned to solve problems. The new faces “ appeared exercises, and many students in the face of ”new faces " often have no way to start, because of poor consideration, understanding of bias and other reasons, leading to misunderstanding. The following part of the function is combed and proposed Some countermeasures. I hope this article can be helpful to students in a examination.