注意,大家需要知道,如何建立和计算这种形式的线积分。
Remember, you have to know how to set up and evaluate a line integral of this form.
平面中的通量和空间中的通量有很大区别,在平面中,通量仅仅是线积分的另一种形式,而在空间中,它表现为曲面积分。
Flux looks quite different in the plane and in space because, in the plane, it is just another kind of line integral, while in space it is a surface integral.
重新分解积分域。。。,我的目标是,用另外一种形式重写这个积分。
The other way around, I have to, so my goal, now, is to rewrite this as an integral.
The integral of one over a quantity is the natural log.
这种形式的积分结果,是自然对数。
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