Hey,

Let

Let C be the circle with

and evaluate the flux integral:

I can't seem to use Greens Theorem on this particular question and don't know why.

Second part:

Now let K be an arbitrary simple closed curve in the plane that does not pass through

(0,0). Use Green's theorem to show that:

has, only, two possible values depending on whether (0,0) lies inside or outside of K.

I really need help on this one.

Can someone help me with this?

Thanks