Q:

How do I determine the purpose of this op-amp circuit?

I have this circuit and I was asked to determine V2=f(V1) and V3=f(V2) which I determined below. The next step is to figure out what the purpose of this circuit is but I'm not sure how to do it from the equations I got.

A:

The first op-amp is a differential amplifier set up to measure its common mode rejection ratio, and possibly its common mode input range.
The second op-amp is an inverting, dampened low pass filter. Real-world application is not known but possibly used to dampen a peak in the frequency response of the first op-amp.

