多元函数的梯度与方向导数关系的几何表示

Geometric Representation of Relationship between Gradient and Directional Derivative for Multivariate Function

首先讨论三元函数的梯度与方向导数关系的几何表示方法。然后将这方法推广到n元可微函数的梯度与方向导数关系的几何表示方法。

Geometric representation of the relationship between gradient and directional derivative for ternary function is discussed firstly. And then, the geometric representation method is extended to the differentiable function in R^n.