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函数是高中数学中的核心概念,从几个基本初等函数出发,通过四则运算及复合运算可得到更多的函数.相对于函数的四则运算,函数的复合运算显得更为抽象.虽然在函数学习过程中时常涉及具体的复合函数,但教材直到选修2-2的“简单复合函数的导数”中才提及“复合函数”的名称.而之前遇复合函数往往仅从一般函数的角度来看待它,不用考虑它是由哪两个函数复合而成的.比如,函
Function is the core concept of high school mathematics, starting from a few basic elementary functions, through the four operations and complex operations can be more functions.Compared with the four functions of the function, the compound operation of the function is more abstract.Although in function learning The process often involves a specific compound function, but the teaching material does not mention the name of a “complex function” until “Derivatives of simple complex functions” in elective 2-2, whereas in the case of complex functions, Think of it from the point of view, regardless of which two functions it is composed of. For example, letter