Let's think about the tangent plane with regard to a function f.
我们来考虑，关于函数f的一个切平面。
Say that f, our vector field is actually the gradient of some function.
也就是向量场f实际上是一个函数的梯度。
The unknown function F can be easily identified like the identification of Lagrange multipliers.
而待定函数F的识别类似于拉氏乘子的识别。
The unknown function F can be easily identified like the identification of Lagrange multipliers.
而待定函数F的识别类似于拉氏乘子的识别。
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