Preparing for week 7

Please do the following in preparation for week 7:

• Read chapter 6 (6.2 only Gaussian Elimination, 6.3 only 2-3 Trees, skip 6.5);
• Attempt these problems before the tute: 6.1: 3, 11 (3, 10 in first edition); 6.3: 7 (for a different input); 6.4: 1, 6; 6.6: 5;
• Complete the week 5 lab exercise on directed graphs.