函数是从数量关系上对客观事物之间联系的一种基本反映,它既是数学研究的对象,又是解决数学问题的基本方法。函数是数学知识体系中的核心内容,在初中阶段,对于一次函数、反比例函数、二次函数等初等函数相关知识的学习,不仅使学生对数学的理解进入了一个全新的层面,更为他们向更高阶段的发展奠定了坚实基础。因此,函数问题成为各地数学 Function is a basic reflection of the connection between objective things in terms of quantity, which is not only the object of mathematical research, but also the basic method of solving mathematical problems. Function is the core of the system of mathematical knowledge. In the junior middle school, the learning of the elementary functions such as the first-order function, the inverse proportion function and the second-order function not only enables the students to enter a completely new level of understanding of mathematics, A higher level of development has laid a solid foundation. Therefore, the function problem becomes math everywhere