判别函数增减性、极值与曲线凹向、拐点的一种方法

An Approach to Judging Some of the Characteristics of Functions and Curves

本文给出了利用n(n≥>1)阶单侧导数及n(n≥>1)阶导数为无穷判别函数增减性、极值与曲线凹向、拐点的方法。

This paper presents and approach to judging the functional increase,de— crease and extreme as well as the concave,convex and inflection point of curves by means of the n—order(n>1)one sided derivative and the infinite differentiable functions.