分段函数在教材中是以例题的形式出现的 ,并未作深入说明 ,许多同学对此认识往往比较肤浅 .本文就分段函数的有关问题整理、归纳如下 :1.分段函数的含义所谓“分段函数” ,习惯上指在定义域的不同部分 ,有不同的对应法则的函数 ,对它应有以下两点基本认识 :(1)分段函数是一个函 Piecewise functions appear in the textbook in the form of examples. They are not described in depth. Many students are often superficially aware of this. This article collates and summarizes the problems related to the piecewise functions as follows: 1. The meaning of the piecewise functions “Segment function” is used to refer to a function that has different corresponding rules in different parts of the domain. It should have the following two basic understandings: (1) The piecewise function is a letter