研究函数的最值时,经常遇到一些含有参变量的函数,这类函数的最值往往又是参变量的函数,而这个函数关于参变量又有最值、于是就有最大值的最大值、高大值的高小值、高小值的高大值、最小值的最小值,等等。我们把这类问题称为最值嵌套问题,一般地,对于含参变量的函数,如果在自变量的某个范围内,函数取得某种最值,则称这个最值 When we study the function’s maximum value, we often encounter some function that contains a parameter. The value of such a function is often a function of a parameter, and this function has a maximum value with respect to the parameter, and thus has a maximum value. , high and low high, small and high high, low minimum, and so on. We call this kind of problem the most value nested problem. Generally, for a function with a parameter, if the function takes a certain value within a certain range of the independent variable, it is called the maximum value.