Homework Statement
Find the steady-state oscillation of the mass–spring system
modeled by the given ODE. Show the details of your
calculations.
Homework Equations
1. y'' + 6y' + 8y = 130 cos 3t
2. 4y’’ + 8y’ + 13y = 8 sin 1.5t
The Attempt at a Solution
1. cos(3t) at the end means the...