Sketch Bode plots for the following systems. Use asymptotes, but locate at least one point in the Magnitude plot and make sure to calculate zeta for complex peaks.
a. G(s) = 1/ [s(s +1)(s + 5)]
b. G(s) = [(s +1)^2] / [s(s +1)(s + 5)]
c. G(s) = 1 / [s^2 + 3s + 10]
d. G(s) = [s^2 + 2s + 4] / s^2 + 5s +10