含有未知函数的等式称为函数方程;求出未知函数的过程称为解函数方程。下面根据中学数学内容,介绍解函数方程的几种方法。 1.解方程(组)法利用这种方法解函数方程时,一般只要对函数中的自变量作几次代换,把函数方程转化为我们所熟悉的代数方程或代数方程组的形式来处理。 An equation containing an unknown function is called a function equation; a process of finding an unknown function is called a solution function equation. Based on the content of middle school mathematics, several methods for solving the function equations are introduced below. 1. Solving equations (groups) When using this method to solve function equations, generally as long as the substitution of the variables in the function is performed several times, the function equations are converted into the forms of algebraic equations or algebraic equations familiar to us. .