7 Steady-State Performance and System Type 485 Table 3 (Continued) No. G(s) Nyquist Contour Polar Plot K 6. s(s 1)(s 1) 2 1 7. K(s 1) a s(s 1)(s 1) 2 1 12 a 2 1 12 a 1 2 K 8. s 2 K 9. 2 s (s 1) 1 10. K(s 1) 1 2 s (s 1) 1 2 1 a 1