Chapter 9, Problem 9.38P

Consider the circuit in Figure P9.38. (a) Derive the expression for the output voltage $v_O$ in terms of $v_{I1}$ and $v_{I2}$ . (b) Determine $v_O$ for $v_{I1}=+5mV$ and $v_{I2}=-25-50\sin \omega tmV$ . (c)Determine the peak currents in the $10k\Omega$ and $20k\Omega$ resistors.