A differential amplifier connected in the circuit in the given figure has the parameters listed below with RI = 4.5 kΩ and RL = 550 Ω: Input resistance Rid = 0.5 MΩ Output resistance RO = 20 Ω A = 80 dB vi = VI sinωt Find the overall voltage gain AV, current gain Aj, and power gain AP for the amplifier, and express the results in dB. (Round the final answer to one decimal place.) AV = dB Ai = dB AP = dB