So I have a notch filter consisting of a voltage divider - resistor in series, inductor and capacitor in shunt, output taken from the junction of the two legs. The transfer function of this filter with component values normalized to 1 is \(\frac{s^2 +1}{s^2 +s +1}\). My question is, how do I calculate the response of the complex conjugate pair of zeros? It's 0 + i and 0 - i, so there doesn't seem to be any damping ratio, and so I don't know how to plot the response! Any advice would be appreciated.