Hi, I'm trying to answer the following question:

http://imageshack.us/m/849/9551/greenstheorem.png

Basically, I know that you have to use Green's Theorem:

Which makes our integral:

My problem is, I don't know how to calculate the limits for the area A. Do we use a parameterisation, or are the limits simply the points of intersection of the functions.

Any help is immensely appreciated.

Thanks :)