Find and plot both the steady periodic solution Xsp (t) = C cos (wt - ) of the given differential equation and the actual solution x(t) = Xsp (t) + Xtri) that satisfies the given initial conditions. x' + 2x' + 2x = 5 cos 3t; x(0) = 0, x'(0) = 0 . . . The steady periodic solution is Xsp (t) =]. (Simplify your answer. Use integers or decimals for any numbers in the expression. Round to three decimal places as needed.)