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This probably isn't that tough, but I'm stumped. This is actually for a control systems class, so I'm supposed to start in the time domain and then take the Laplace transform. Once I have done that, I'm supposed to solve for the transfer function, but I can't seem to come up with enough equations because of the two supernodes connected at the bottom there.

Any supergeniuses out there willing to help little ol' me? I probably just need a little push.

Oh, forgot to mention: Top resistor is R2, bottom resistor is R1. Both capacitors are identical.

-Jason