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函数概念的产生,本身就标志着数学思想方法的重大转折——由常量数学到变量数学。而函数的应用,更使得数学的面貌,从对象到理论,方法,结构,发生了根本的变化。就中学数学而言,函数的重要性是不容置疑的,它已经成为中学数学中的纽带,但同时它又是学生最难理解的内容之一。函数对学生而言在理解方面确实存在较大的困难。
The emergence of function concept, itself marks a major turning point in mathematical thinking and methods - from constant mathematics to variable mathematics. The application of the function, but also makes the face of mathematics, from the object to the theory, methods, structure, fundamental changes have taken place. In the case of middle school mathematics, the importance of the function is undeniable. It has become a link in middle school mathematics, but at the same time it is one of the hardest parts for students to understand. Function for students in terms of understanding there is indeed a big difficulty.