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函数是中学数学最重要的内容之一,一轮复习时,我们掌握和透彻理解了函数的概念、图像和性质,学会了利用函数的理论和方法处理各种类型的问题,充分体会到函数的概念和性质贯穿中学数学的始终,利用函数观点可以处理很多数学问题．近十几年来,每年高考数学试题中都贯穿着函数及其性质这条主线,“函数热”居高不下．函数性质的应用既是重点,又是一个难点,除了注意适当的练习和巩固
The function is one of the most important contents of middle school mathematics. During a review, we grasped and thoroughly understood the concept, image, and nature of the function, learned to use the theory and method of the function to deal with various types of problems, and fully realized the function. The concept and nature of mathematics throughout the middle school, the use of functional point of view can handle many mathematical problems. In the past ten years, the main line of function and its nature has been used in the annual mathematics test of college entrance examinations, and the “function heat” has remained high. The application of function properties is both important and difficult, in addition to proper practice and consolidation.