The double integral
is equivalent to
Note that as passes , our formula for the inverse changes.
This is probably very simple but I don't know why I am having trouble switching the order of integration and the parameters for double integrals.
For example,
if the x parameters are 0 and pi and the y parameters are 0 and sinx,
how would i change the parameters so I express x as function of y and get two values for y boundaries