二次函数是学生初中学过的内容,但初中的学习只是简单的应用,或者是分析图象,没有对函数本质的分析,通过高中的学习使学生对二次函数有了更深入的了解和更为广泛的应用,如:二次函数本身的单调性最值问题,特别是二次函数最值问题无论是指数函数、对数函数、三角函数、数列、导数等很多方面都有非常广泛的应用,所以研究好 The secondary function is the content of junior high school students, but the junior high school learning is only a simple application, or the analysis of images, there is no analysis of the nature of the function, through high school learning so that students have a deeper understanding of quadratic functions and More extensive applications, such as: the quadratic function itself monotonic most value problem, especially the quadratic function most value problem whether it is exponential function, logarithm function, trigonometry, series, derivatives and many other aspects have a very wide range of Application, so good research