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反函数是高中数学中的重要概念之一,也是学生学习的难点之一·在历年高考中也占有一定的比例·为了更好地掌握反函数相关的内容,本文重点分析关于反函数的几种题型及其解法·一、反函数存在的充要条件类型例1(2004年北京高考)函数f(x)=x2-2ax-3在区间[1,2]上存在反函数的充要条
Inverse function is one of the important concepts in high school mathematics, and it is also one of the difficulties for students to study. It also occupies a certain proportion in the college entrance examination over the years. In order to better grasp the content of inverse function, this article focuses on the analysis of several kinds of inverse functions. Question type and its solution · First, the necessary and sufficient conditions for the existence of the inverse function type Example 1 (2004 Beijing college entrance examination) function f (x) = x2-2ax-3 In the interval [1,2] there is an inverse function of the charge and demand