Limiting value for x: x+3=3 => x=0 , x= y/4

Limiting value for y : y=0 , y=2

As the limiting value of x is dependent on y then we will integrate with respect to x then with respect to y.

Integrating with respect to x we get => [(x^3/3) + xy^2]

putting the limit of x=y/4 , x=0 we get: [(y^3/192)+(y^3/4)]

Now integrating with respect to y we get: [(1/192)+(1/4)] * (y^4/4)

Putting the limit y=2 , y=0 we get: [(1/192)+(1/4)] *4  => 49/48.

So the answer of the integration is 49/48.

I hope my answer helps you. All the very best for your future endeavors!