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.
New: 10.2.16 Old: 9.2.18
New: 10.2.28 Old: 9.2.36. Use the stated method.
New: 10.2.44 Old: 9.2.60. Solve by finding -type
solutions for suitable vectors . Identify matrix .