4. Quadratic Programming Problem

5. X 1 + X 1 + x 2 + x 3 - 1 = 0 0

7. Efficient Frontier

8. An Impossible Shape for the Efficient Frontier

9. Combinations of Risk-Free Rate and Risky Portfolios A, B, G

10. Risky Portfolio A and Lending and Borrowing at the Rf Rate

11. Efficient Frontier with Lending but no Borrowing at the Rf Rate (100% Margin Limits)

12. Efficient Frontier with Different Lending and Borrowing Rates