1. The problem statement, all variables and given/known data This is probably a stupid question, but I'm not too sure how to obtain the "Voltage gain |Vo/Vs| after finding Vo/Vs which I think is called the transfer function". I'm doing a question where I found the Vo/Vs but I'm not sure how to turn that into |Vo/Vs| 2. Relevant equations 3. The attempt at a solution The correct answer given to us is below The answer seems to have squared top and bottom and taken the square root of the bottom? Not entirely sure what's the general method for this.