Homework:
18, 24, 36, and 37 from section 3.2
https://ocw.mit.edu/courses/mathematics/18-06-linear-algebra-spring-2010/assignments/MIT18_06S10_pset3_s10_soln.pdf
19, 25, 27, and 28 from section 3.3. Problem 17 is optional but recommended
Lec 8 | MIT 18.06 Linear Algebra, Spring 2005
Lec 6 | MIT 18.06 Linear Algebra, Spring 2005