Consider the function f(x, y) = = 2y (a) (4 marks) Show that toward the origin. Provide a diagram to illustrate the paths that lim f(x, y) does not exist by using different path (x,y)-(0,0) (b) (8 marks) Show that you have chose lim f(x, y) does not exist by using - definition. (x,y)(0.0)