... 2 6 16 31 30 50 0 Bảng Routh s5 1 16 30 s4 6 31 50 α =31 6 s3 ,− ⋅ =1 16 31 10 83 6 ,− ⋅ =130 50 21 67 6 0 ,α =4 6 10 83 s2 , ,,− × = 6 31 21 67 ... lệnh sau: >> TS=30; MS=[1 4 30]; G=tf(TS,MS) Transfer function: 30 s^2 + 4 s + 30 >> impulse(G) >> step(G) >> bode(G) >> nyquist(G) CHƯƠNG 3 118 ... 1 8 7 s4 4 8 4 α =314 s3 − × =18 8 6 4 − × =1 7 4 6 4 0 α =44 6 s2 − × =48 6 4 6 4 α =5 6 4 s1 − × = 6 6 4 04 0 ⇒ s1 8 0 α = 6 48...