初中数学中涉及的函数主要有三种,即:一次函数,反比例函数以及二次函数.它们都是初中数学的重要内容,也是中考命题的主要热点.由这三种函数构成的一些综合问题,在近年的中考中频频出现.下面以2010年中考试题为例,进行分类解析. There are three main functions involved in junior high school mathematics, namely: primary function, inverse proportional function and quadratic function. They are all important contents of junior high school mathematics, and they are also the main hot spots of the probation topic. Some comprehensive problems composed of these three functions are In recent years, the mid-term exams have appeared frequently. The following exam took 2010 exam questions as an example to analyze the classification.