Homework:
16, 32, and 33 from section 5.2
https://ocw.mit.edu/courses/mathematics/18-06-linear-algebra-spring-2010/assignments/MIT18_06S10_pset7_s10_soln.pdf
8, 28, 40, and 41 from section 5.3
Lec 20 | MIT 18.06 Linear Algebra, Spring 2005
Lec 18 | MIT 18.06 Linear Algebra, Spring 2005