Day 22 in Mat225

Last time: Determinants and a hint of 4.1

Next time: 4.1/4.2

Today:

Return 2.4 problems:
- #4
- #13 -- "how do we know?" contest
Questions/Comments on old stuff?
Section 4.1:
- section 4.1 summary
- Problems, pp. 223-225
  - #1, 7, 8
  - #15-18
  - #19, 21
Section 4.2:
- section 4.2 summary

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