All Find and classify the stationary points of the function given by 1 ag) 2 3x3+ ya + 2::2 12$ 3y. [5] A22 For each of the following? sketch the region of integration and evaluate the double integral by calculating a repeated integral with appropriate limits: (ii) f/Ssmtmmdrdy, 3: {my} : DSIS/ZU gym/3}; where R and S are rectangles; [5]