Solve the IVP with differential operator method:
[D2 + 5D + 6I]y = 0, y(0) = 2, y'(0) = β > 0.
a. Determine the coordinates (tm, ym) of the maximum point of the solution as function of β.
b. Determine the smallest value of β for which ym ≥ 4.
c. Determine the behavior of tm and ym as β→∞.