Multiple choice

The driving point impedance Z(s) of a network has the pole-zero locations as shown in the figure below. If Z(0) = 3, then Z(s) is

  1. $\dfrac{3(s+3)}{s^2 + 2s + 3}$
  2. $\dfrac{2(s+3)}{s^2 + 2s + 2}$
  3. $\dfrac{3(s-3)}{s^2 - 2s - 2}$
  4. $\dfrac{2(s-3)}{s^2 - 2s - 2}$
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B Correct answer
Explanation

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