I want to find the potential for this vectorfield.
我想找出这个向量场的势函数。
2
If we have a vectorfield 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。
3
So, actually on Tuesday we'll see how to decide whether a vectorfield is a gradient or not, and if it is a gradient, how to find the potential function.