摘要
In this paper,symmetric partial derivatives and symmetric total differential of a function of several variables are defined.The relationship between partial derivative and the symmetric partial derivative,the total differential and the symmetric total derivative are discussed. By means of the concept of symmetric partial derivatives,the existence theorem of the total differential of a function of several is obtained.
In this paper,symmetric partial derivatives and symmetric total differential of a function of several variables are defined.The relationship between partial derivative and the symmetric partial derivative,the total differential and the symmetric total derivative are discussed. By means of the concept of symmetric partial derivatives,the existence theorem of the total differential of a function of several is obtained.
出处
《南京农专学报》
2001年第1期93-95,99,共4页
Journal of Nanjing Agricultural Technology College
关键词
对称偏导数
极限
对称全导数
定义
symmetric partial derivative
limit
symmetric total derivative.
