- #1
philnow
- 83
- 0
Homework Statement
Hey all. The problem is to solve the double integral xy da where the constraints C is x^2 + y^2 = 1, with the change of variables x = u^2 - v^2 and y = 2uv
The problem is applying the change of variables to the constraint unit circle. After the algebra I end up with (u2+v2)^2 = 1. What shape does this represent? How can I find the constraints for U and V given this... odd... equation?