Bridge Amplifier

hello, i'm currently studying op-amp circuits and recently, our proffesor introduced to us a certain type of amplifier that i've never seen even in books; the so called bridge amplifier.

the circuit is shown in the file attachment.

can anyone help me in solving the Vo? the formula i mean...
or is there any website you know that is related with this (because i can't find any! i already tried the ebooks in this site but there's nothing also)?

our proffesor leave us without any further information about this, just an introduction.

By the way, the values of resistors, and Vi in the circuit that i've attached is only an assumption. I really don't know if the values there are accepted.

Thank you in advance for your help!

by the way, the Vo is at the end of the op-amp.

The transfer function of this amplifier is as follows:

Vout/Vin = (R3/(R3+R5)-R4/(R4+R6))*(1+R2/R1)

See the attached schematic for the resistor notation.

If you want to see the proof of this transfer function see my article here:

The Transfer Function of an Amplifier with a Bridge in the Negative Feedback