函数是高中数学的一条主线 ,函数的概念、性质及函数的思想方法贯穿于整个高中数学 ,函数思想是解决数学问题的重要思想方法之一 ,它的应用十分广泛 .因此 ,函数总是历年高考考查的重点 ,也是考查学生的逻辑思维能力 ,深化理性思维考查的一个重要载体 .特别地近几年来 ,高考命 The function is a main line of high school mathematics. The concept, nature and function of the function are permeated throughout the high school mathematics. The function idea is one of the important methods to solve mathematics problems. Its application is very extensive. Therefore, the function is always a college entrance examination. The focus of the examination is also an examination of students’ logical thinking ability and an important carrier for deepening rational thinking. In particular, in recent years, the college entrance examination