a) Use matlab simulink to find the general solution for the following system of differential equations: t 9(E) + / XL4) 9(E) + 2 (6) = 1 t, t X(t) + + x 1 2(10)214) + 4 (4) = 2 + TCH CH CH XH 23 (t) b) Show how to find x(t). y(t), z(t) at t-20 sec