stewart 16.9 #15
the jacobian is 1/v, you have the 0 and 1 backwards in your matrix of partial derivatives
So I'm asked to find where is the region in the first quadrant bounded by and using the change and .
I find the equations and . The Jacobian is . So I set up the integral . Now this looks very far from the answer in the book. But I don't see the mistake.