The general solution for damped oscillation is given by
X(t) = Ae^(-yt)cos(w1t + φ)
To find the specific solution, the specification is given by X(0)=X0 and v(t) = dx/dt, when t = 0, v(t) = v0
1. Find the first derivation of x(t)
2. Determine the constant A and φ after substituting x(0) and v(0)