b. Consider the function 2 2 x+y 32+1' g(x3y5:): i. Evaluate g(l, l, l) and write down a Simplied equation for the level surface containing the point (1, l, l) . (I mark) ii. Briey describe the level surfaces of g(x, y,:) in general. Hint: classify the level surface through the point (1, l, 1) rst and then explain how the other level surfaces are similar or different. ( 3 marks)