Exam:
https://ocw.mit.edu/courses/mathematics/18-06-linear-algebra-spring-2010/exams/MIT18_06S10_exam3_s10.pdf
Solutions:
http://math.mit.edu/~gs/linearalgebra/linearalgebra5_7-1.pdf
Lec 33 | MIT 18.06 Linear Algebra, Spring 2005
Lec 31 | MIT 18.06 Linear Algebra, Spring 2005