2-4. Solve the following differential equations: d2 x dx (a) d12 + w x (1 ) = 0 x(0) =0 (at t = 0) = vo dt dx (b) diz + w x (1 ) =0 x(0) = A (at t = 0) = vo di Prove in both cases that x (t) oscillates with frequency w/27