图像法是函数的三种表示方法之一,因而函数图像中蕴含着丰富的数学信息.通过多种途径获取信息,是我们必备的基本技能之一.你能从函数图像中最大限度地获取信息吗?我们就以二次函数为例,作点探究吧! Image method is one of the three representations of functions, so the function image contains a wealth of mathematical information. To obtain information through a variety of ways is one of the basic skills we must master.You can get the maximum from the function image Information? We take the quadratic function as an example, for some exploration!