Laplacian
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Laplacian
参考文献
https://en.wikipedia.org/wiki/Second_derivative
拉普拉斯是将二阶导数推广到高维空间的一种方式。
Another common generalization of the second derivative is the Laplacian. This is the differential operator ∇2 defined by
∇2f=∂x2∂2f+∂y2∂2f+∂z2∂2f
The Laplacian of a function is equal to the divergence of the gradient and the trace of the Hessian matrix.
什么是Hessian matrix?什么是梯度的divergence?
先不研究。
标签:frac,matrix,Laplacian,2f,partial,y2 来源: https://blog.csdn.net/ChenglinBen/article/details/91973666