指数函数与对数函数是中学数学中的两个重要函数,以它们为背景充分考查函数的概念、图象和性质的运用,通过它们来考查学生数形结合思想、分类整合思想、推理和运算能力等.其中对指数函数和对数函数图象、性质以及综合运用的的考查是高考的重点和热点.由于指数函数 Exponential function and logarithmic function are two important functions in middle school mathematics. Based on them, we fully examine the application of concepts, images and properties of functions, through which we can examine students’ ideas of number and shape, ideas of classification and integration, reasoning and computing Ability, etc. Among them, the exponential function and the logarithmic function image, the nature and comprehensive use of the test is the focus and hot point of the college entrance examination due to the exponential function