基于二分法的函数图像描绘

摘要

本文结合导数研究函数的单调性、凹凸性的方法，从二分法的基本思想入手，用二分法描绘函数图像，得出二分法求拐点横坐标近似值、描绘函数的图像的基本步骤，进而拓展了二分法的应用。%Combined with the derivative, this paper analyses the monotonicity and convexity of the function, describes the functional image by using dichotomy, gets the dichotomy of inflection point x-coordinate approximation and basic steps of describing functional image, then expands the application of dichotomy.