8 11/19

1. New: 3.4.14 Old: 3.4.14

2. New: 3.5.2 Old: 3.5.2 Graph neatly.

3. New: 3.5.8 Old: 3.5.8

4. New: 3.6.16 Old: 3.6.16. ``Solve'' means here find $\hat y_1$ and $\hat y_2$, not $y_1$ and $y_2$. The controls students will comment of the effectiveness of the device as a vibration absorber.

5. New: 10.2.10 Old: 9.2.12. Write first the general solution to the system, regardless of initial conditions in terms of the fundamental matrix. Then plug in the initial conditions and clean up.

6. New: 10.2.16 Old: 9.2.18