Day 21: Linear Algebra

Today:

• Warning: exam this Friday: chapter 2, and section 4.1

• Homework 2.4/2.5 due today

• Homework 4.1 due Wednesday (will be available Thursday, on my door)

• Okay on stuff from last time?
  • Section 4.1 Highlights

  • section 2.4/2.5 highlights (pdf)

  • Some interesting outer-products:
    • Images from sums of rank ones
    • the rank ones

  • Hearing and linear algebra

• Chapter 3: determinants
  • Chapter 3 highlights (pdf)

• 4.2: some important subspaces
  • section 4.2 highlights (pdf)