QUESTION 6 It is particularly easy to do design a state feedback vector K in the control law u(t)Kx(t) + kryref(t) using pole-placement if the state-space system is on reachable canonical form as in the previous problem. Why is this so? O The closed-loop state-space system is also on reachable canonical form, so the coefficients of the characteristic polynomial is obtained directly from the first row of the A-matrix O The poles of the closed-loop system will be the same as the elements of the feedback gain K O We can use a computer to do the calculations