Build and test the operational amplifier summing circuit you designed for the Prelab using 741-type op-amps. Use VA = 2 V and VB = 3 V with power supply rails of ±18 V. Ask your lab instructor to give the correct pin-out of the 741 if necessary. To obtain the approximate input voltages, use the voltage divider circuit shown below; if you don't have 30-ohm resistors available, use two 15-ohm resistors in series for each. Some component "tweaking" may be necessary if your particular circuit is an appreciable load on the voltage divider. When connecting the bipolar power supply, make sure the center terminal is connected to the same common ground as the rest of the circuit; otherwise, it will not work properly. What is the output voltage? Does your circuit achieve the mathematical expression Vout = 2VA + 3VB? Use the space provided for mathematical computations if necessary.