函数知识综合题，一直是中考命题热点．它以《函数及其图象》一章知识为核心，以二次函数为纽带，综合较多知识点，不仅考查函数基础知识，更考查数形结合等思想方法的运用能力，丰富的分析、推理、变换能力．虽然这类题近年来难度下降，但还有许多地方将它放在压轴的位置上． The synthesis of function knowledge has always been the focus of the proposition test. It takes the knowledge of the “function and its image” chapter as the core, and uses the quadratic function as the link to synthesize more knowledge points. It not only examines the basic knowledge of functions, but also examines the ability to use ideas and methods such as the combination of numbers and shapes, and rich analysis. Reasoning, transformation capabilities. Although this type of problem has decreased in difficulty in recent years, there are many places where it is placed on the finale.