“函数及其图象”这部分知识在初中数学中占有十分重要的地位,它是“数”与“形”的有机统一,在新课程标准下的数学课程中,加强了函数知识在生产、生活实际中的应用,在近年各地中考题中,常出现用图象信息来反映人们生产、生活中的有关问题.现举例说明如下:例1蜡是非晶体,在加热 This part of “function and image” plays a very important role in junior mathematics. It is the organic unity of “number” and “form”. In the mathematics curriculum under the new curriculum standard, function knowledge is strengthened in production. In the practical application of life, in recent years in various examination questions, there often appear to use image information to reflect people’s production and life related issues. Now illustrate as follows: Example 1 Wax is amorphous and heated