_set_2.pdf 3 Visualizing utility functions For each of the following utility functions over X - R2, plot three indifference curves by hand, shade in an upper contour set, and identify whether the preferences represented by the utility function are convex, monotone, both, or neither. 1. U(x) = 21202 2. U(x) = 2x1 + 312 3. U(x) = min {x1, 202 } 4. U(2) = =1+ 22 5. U(ac) = 1 - (21 - 1)2- (202 - 1)2