函数与方程思想是最重要的一种数学思想,综合知识多、题型多、应用技巧多。函数思想简单,将所研究的问题借助建立函数关系式亦或构造中间函数,结合初等函数的图象与性质,加以分析、转化、解决有关求值、解(证)不等式、解方程以及讨论参数的取值范围等问题;方程思想即将问题中的数量关系运用数学语言 Function and equation thinking is the most important kind of mathematical thinking, comprehensive knowledge and more questions, application skills. The idea of ​​function is simple, and the problems of the study are analyzed, converted and solved by means of establishing function relations or constructing intermediate functions, combined with the images and properties of elementary functions, to solve the problems related to evaluation, solution (card) inequalities, solution equations and discussion parameters The range of values ​​and other issues; the idea of ​​equations to use the number of problems in the relationship between mathematical language