1. Apply the theorem of this section to the case of minimization problems (refer back to Question 3, Appendix D). 2. When f1, f2  0, show that it is sufficient for uniqueness that the feasible set be...

1. Apply the theorem of this section to the case of minimization problems (refer back to Question 3, Appendix D).

2. When f1, f2  0, show that it is sufficient for uniqueness that the feasible set be upper convex, i.e. a line joining any two points on its upper boundary lies in the interior of the set. [Hint: consider Fig. E1(a).]