二元函数极值充分条件的评注

A Remark on Sufficient Condition of Extreme Value for Bivariate Functions

本文对二元函数极值的充分条件作了进一步的讨论 ,得到了 AC-B2 =0时 。

This article is mainly devoted to discuss the sufficient condition of extreme value for bivariate functions, and in which the sufficient condition to determine the extreme value when AC-B 2=0 is given.