Problem 2: 2 2 Consider the function f, given by f= 3:, +3; (x, y) (o, 0), f(0,0)=0. x y (a) Graph and draw a contour diagram for f Describe the graph and the contour diagram (b) Show that ow) and x, 0) are not continuous functions of one variable. (0) Is x, y) continuous at (0,0)