Question 1 (20 marks) 2 ,2 :1. Consider the mction f(x, 3,!) = 61 j . i. Sketch level curves f0", 3,!) = k for k = and 1 on the same set of axes. 1 11 3'2 ii. Sketch and describe the surface .a = f(x, y) . Note that this is not a quadric surface, so just describe what it looks like. (3 + 2 marks)