A single degree of freedom M, C, K system with differential equation given as 2 X? + 10 X? + 8 X = 0 is subjected to initial conditions X(0) = 2 and X?(0) = 0. (a) find the free response solution X(t) in mathematical equation form (including the phase angle if ? is < 1) and (b) sketch the displacement versus time graph from time = 0? until the system settles.