论文部分内容阅读
纵观历年高考,求参数取值范围问题一直是高考的重点、热点,也是一个难点,一些含参数变量的问题,往往看起来很复杂,甚至无从下手。但如果能构造函数,通过求函数的值域或最值,进而确定参数的取值范围,则会起到简捷明了,事半功倍的效果,本文将通过典型范例介绍解决该类问题的有效的方法——构造函数法。
Looking at the college entrance examination over the years, the problem of finding the range of parameter values has always been the focus, hot spot, and difficulty of the college entrance examination. Some problems with parametric variables often seem complicated and even impossible to start with. However, if you can construct a function, by finding the range or the maximum value of the function and then determining the range of the parameter, it will be simple, clear, and effective. This article will introduce a typical example to solve an effective method of solving such problems. - Constructor method.