Given: (, ) = 〈ln(2 + 2), arctan(y/x)〉
where R is the annulus {(, }: 1 ≤ ≤ 2, 0 ≤ ≤ 2.
compute for the circulation and outward flux across the boundary of the given region.
The first thing I know is to use the normal form for the outward flux and tangential flux for the circulation. But what do you do with the region R? thank you.