4. CURVE SKETCHER. Draw by hand the U [X , Y] = 4- indifference curves for the six utility functions introduced in Questions 1-3. Show at least FIVE different (X,Y) points on the curve, including any times the curve intersects an axis. HINT: For each function, nd the points (X,Y) that set U [X , Y] = 4-. a) U[X, Y] = XV? b) U[X,Y] =X+ 2Y c) U[X,Y] = 2\\/J(+ Y d) U[X,Y] = Vim/V e) U[X, Y] = X2 + Y2 f) U[X,Y] = XY+X U = XVY U = X + 2Y MUx