Consider a critically damped mass spring system with mass m = 4 kg, spring constant k = 9 N/m, and damping coefficient, a = 12 (N s)/m, stretched

Consider a critically damped mass spring system with mass m = 4 kg, spring constant k = 9 N/m, and damping coefficient, a = 12 (N · s)/m, stretched past equilibrium by 1 m and released with an initial velocity of 1 m/s. Write the solution of the initial value problem.