V) and the resistors (RI, Ra, R1, Ra, Rs, Ra and R:) for the op-amp circuit shown in Figure A1. Please write down your steps and draw the necessary sketches to illustrate your calculation. All the op-amps in the circuit are assumed to be ideal op-amps. Derive the formula for caleulating the ouput voltage Vas as a function of input voltages (Va and R. ww Va Vas Voa Ve Figure Al Hints: a) The general formula for the simple non-inverting OP-Amp circuit is: Vout = (Ri+R2 (*TA2) x Vin , whereas R2 is the feedback resistor. R1 R2 x Vin R1 b) The general formula for the simple inverting OP-Amp circuit is: vout = - whereas R2 is the feedback resistor. c) Use the above two formulas to calculate voi and vo2, and then apply KCL or KVL to find vo3.