Announcement

  • HW5 due Nov 15 @ 11:59pm on Gradescope/BruinLearn.

Q&A

  • Q3.2. Hint: In class, we showed that $N(A) = C(I- A^- A)$.

  • Q3.3. Hint: lecture.

  • Q2 (Householder algorithm) context. This is what’s happening when you call lm (qr) in R!

  • Q4. You can use whatever computer language (R, Python, Julia, etc.) you like for this question.

Today

  • Eigenvalue, eigenvector, eigen-decomposition.