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反函数是每年高考的热点,本文想通过一道题的三种解法,帮助大家理解反函数的概念,以此达到提高解题速度和准确度的目的·
Inverse function is the hot spot of college entrance examination every year. This article tries to help you to understand the concept of inverse function through three solutions to one problem, so as to improve the speed and accuracy of the problem solving.