Covered today: A review of notation and basic facts from matrix algebra. Sections 7.1 and part of 7.2.

For next time: 7.2 - 14,15,18,22,23,25,26 (NOTE: you should be able to do every problem in section 7.2 - do as many as you need to refresh your memory, but I'll only take up those listed above) and 7.3 - 6,7,9 (you should also be able to do 1-5, but I won't take them up).