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函数是中学数学的重要内容,而反函数是其中的一个难点,尤其是复合函数的反函数,从形式上又增加了难度,更使考生望而却步.今年陕西省的高考理科数学题中就涉及到了函数f(x-1)与f~(-1)(x-1)的图像问题.考生普遍反映这道题较难.本文就以分析这道高考题为机会来进一步探讨一下函数f(x+a)与f~(-1)(x+a)的关系问题,以期对考生在这方面能有帮助.
Function is an important part of middle school mathematics, and inverse function is one of the difficulties, especially the inverse function of compound function, which increases the difficulty in form and makes candidates stop playing. This year, the science mathematics problem in the college entrance examination in Shaanxi Province involves The image problems of the functions f(x-1) and f~(-1)(x-1). Candidates generally find it difficult to answer this question. This article will analyze the college entrance examination question as an opportunity to further explore the function f(x). +a) The relationship with f~(-1)(x+a), in order to help examinees in this regard.