1) Sect 4.3 Linear, homoeneous systems of equations
   - #1-15
   - http://math.arizona.edu/~klin/322/download/hw10.pdf
2) Sect 4.6 Inhomoeneous systems of equations
   - #2-7, 10-14
3) Sect 7.9 Inner products and orthogonality
   - #15-22
   - http://math.arizona.edu/~klin/322/download/hw11.pdf
4) Sect 11.1 Fourier series
   - #6-10,12-21.
5) Sect 11.2 Even and odd extensions
   - # 8-17, 23-28
6) Sect 12.3 Wave equation
   - #5-13
7) Sect 12.6 Heat equation
   - #5-7, 12, 14, 15
8) Sect 11.9 Fourier transform
   - #2-11