Can anyone help with how to attack this question? thanks!
Make the substitutions and . (Also keep in mind that with these substitutions, and )
It follows then that and
Therefore,
Similarly, and
Therefore,
Now, we need to find the Jacobian:
Therefore,
(Since we're looking for the area in the first quadrant, we might have to divide our answer by 4).
I'm sure you can take it from here...