摘要
给出了多元函数可微性的等价条件 ;
This paper is to present an equivalent condition for differentiability of functions of several variables. We can simply and vaidly determine the differentiability of functions of several variables using the equivalent condition.
出处
《工科数学》
2002年第4期104-105,共2页
Journal of Mathematics For Technology
关键词
多元函数
可微性
连续性
充要条件
the functions of several variables
differentiability
continuity
