高中数学中函数的最值(值域)问题在数学教学中占有非常重要的位置,因为不但它几乎涉及高中数学的各个分支,而且也是历年高考重点考查的知识点之一。 The most valued (range) problem in high school math occupies a very important position in mathematics teaching because not only is it involved in almost every branch of high school mathematics, but it is also one of the points of knowledge that we have examined over the years.