- Voting schemes: 8 R's vs 19 D's still can elect their man, in three-tiered elections.
- Cutting into equal parts
- Invariants: turning 3x3 table into all 0's starting w one 1 by flipping rows or columns: impossible!
Homework:
- Take 1 pint of oil (in the cup A), 1 pint of vinegar (in cup B); put one TBS of oil into cup B, shake a bit; take 1 TBS of the mixture and put it back into the cup A. Now you have two mixtures: what has more, vinegar in the cup A or oil in the cup B?
- Apply Ax, Ay and AxAy to this dog (recall: Ax is the reflection in the x axis; Ay - in the y axis):
