4. (4 points) Determine the transfer function Vo(s)/V(s) of a PD controller that is implemented by the op-amp circuit shown in the Figure below (assume ideal op-amp). Let R₁ = 167 k2, R2 = 240 k2, R3 = 1k2, R4 = 100 k, and C = 1 μF. V R₁ R₁₂ D R3 + RA