The gain margin of the transfer functionG(s) = 0.75 (s +

The gain margin of the transfer function
G(s) = 0.75
(s + 1)(s + 2)

will be _____dB

GM =		K T₁ T₂		^-1
		T₁ + T₂

Here, K = 0.75, T₁ = 1, T₂ = 0.5

∴ GM =		0.75 × 1 × 0.5		^-1	= 2.4
		1 + 0.5

∴ GM = 20 log a = 12 dB

G(s) =	0.75
	(s + 1)(s + 2)