Question: P8.1 Sketch the polar plot for the following loop transfer functions: (a) L(s)G(s)G(s) = (b) L(s) G(s)G(s) = (c) L(s)G(s)G(s) = 1 (1+0.5s)(1+2s) 3(s2 +1.5s+1)

P8.1 Sketch the polar plot for the following loop transfer functions:

(a) L(s)G(s)G(s) = (b) L(s) G(s)G(s) = (c) L(s)G(s)G(s) = 1 (1+0.5s)(1+2s)

(a) L(s)G(s)G(s) = (b) L(s) G(s)G(s) = (c) L(s)G(s)G(s) = 1 (1+0.5s)(1+2s) 3(s2 +1.5s+1) (s-2) 8-6 s2+5s+6 10(s+6) (d) L(s) = G(s)G(s) = = s(s+ 1)(s+3)

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