函数是整个高中数学的核心知识,地位显赫,我们之所以如此器重她,并非只因为函数本身的魅力,更源于其强大的工具性和导向性,通过巧妙地构造函数,可以使原本扑朔迷离的问题变得清晰明朗,变得可程序化.为更好地说明这点,本文将以实例的形 Function is the core of high school mathematics knowledge, prominent position, why we value her not only because of the charm of the function itself, but also from its strong instrumental and guiding, through clever construction of the function, you can make the original complicated and confusing The issue becomes clear and programmable, and to better illustrate this point, this article will take the form of an example