Day 17 in Mat225

Today:

• Reminder:
  • Remember that we have a test Monday, through section 2.3.
    • last year's test 1
    • the key
  • You may use your calculator.
  • Your next problems will not be due until 10/10.
  • Projects are due in two weeks?
  • Study session Sunday night, 8:00 pm. If you plan on coming late, let me know so that I'll hang out (max 10:00 pm).

• return 2.2 homework
  • 3
  • 10

• Questions/Comments on old stuff?

• Section 2.4:
  • section 2.4 summary
  • Matrix products as special partitioned matrices:
    • inner- or outer-products, and the effect of a various parts of a factorization on a product.
    • outer-product sum

• Section 2.5:
  • section 2.5 summary

Next time: Exam 1