9 11/26

1. New: 10.2.28 Old: 9.2.36. Use the stated method.

2. New: 10.2.44 Old: 9.2.60. Solve by finding $e^{At}\vec v$-type solutions for suitable vectors $\vec v$. Identify matrix $e^{At}$.

3. New: 10.3.4 Old: 9.3.4

4. New: 10.3.8 Old: 9.3.8