梯度的数学定义、物理意义、几何意义和形象化比喻

梯度的数学定义、物理意义、几何意义和形象化比喻

引用

CSDN

1.

https://blog.csdn.net/ConstitutivModel/article/details/139535607

上面两个图中，标量场的值用灰度表示，越暗表示越大的数值，而其相应的梯度用蓝色箭头表示。

将函数 f(x,y) = −(cos2x+ cos2y)2的梯度描绘为在底面上投影的向量场。

将2D函数 f(x,y) =xe−(x2 +y2)的梯度绘制为蓝色箭头，还绘制了这个函数的伪色图。

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