摘要
从代数、几何、分析等几个方面论述了二元函数的可微、一致弱可微及其所表示的曲面在相应点处存在非铅垂切平面之间的关系 。
In this paper,we discussed relationships among the differentialbility and uniform weak differentialbility of bivarible functions and non vertical tangent plane of curved surfaces related the function,and obtained a thorem of the equivelance among the functions and planes.
关键词
可微
一致弱可微
切平面
二元函数
曲面
differentialbility
uniform weak differentialbility
tangent plane
