hi how do you know for 0 to 2 (1st int) and x^2 to 2x (2nd int) (x^3) dydx if you should have x now going from 0 to y^.5 or 0 to y/2 and likewise y going from 0 to 2x or 0 to x^2?
hi how do you know for 0 to 2 (1st int) and x^2 to 2x (2nd int) (x^3) dydx if you should have x now going from 0 to y^.5 or 0 to y/2 and likewise y going from 0 to 2x or 0 to x^2?
Have you drawn a sketch of the region of integration?
It is very clear from such a sketch that the reversed integral limits are x = y/2 to $\displaystyle x = +\sqrt{y}$ and y = 0 to y = 4: