... scalar potential & vector potential 电磁场的纯量位与向量位 Potential vector field 保守向量场 Potential Four-Vector 四元矢量势 ...
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I want to find the potential for this vector field.
我想找出这个向量场的势函数。
If we have a vector field that cannot possibly be a gradient then we shouldn't try to look for a potential.
如果一个向量场不可能是梯度场，那我们就不应该尝试去找势函数。
So, actually on Tuesday we'll see how to decide whether a vector field is a gradient or not, and if it is a gradient, how to find the potential function.
周二我们就知道，怎样确定一个场是不是梯度，如果确实是梯度的话，怎样算出势函数。
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