函数图象不仅是一种表示函数的形式,而且是研究函数的重要工具.图象变换既是作函数图象的一种常用方法,又是研究两个函数关系的工具.在课程标准对数学教学强调数形结合、几何直观等现代数学思想方法的今天,更凸显其重要性.基于这样的观点,本文结合现行课程标准教材和自身的教学实 Function image is not only a form of representation function, but also an important tool to study the function.Image transformation is not only a common method for function image, but also a tool to study the relationship between two functions.In the standard of mathematics teaching At the same time, it emphasizes the importance of the modern mathematics methods such as combination of numbers and geometry, geometric intuition, etc. Based on this point of view, this article combines the current curriculum standard teaching materials and its own teaching practice