The problem statement here makes no sense. Can you please either give the context of the problem, or better yet, simply state the original problem? Thanks!
im just suppose to solve it using polar cordinates. thats all. And im suppose to integrate over the circle so i guess they mean the whole circle. the only thing is that it has its center at (1,0) and not (0,0).
, so thats for r, but I cant see how they get to