(Solved): (a) Determine the output voltage \( v_{o} \) for the circuit shown as a function of the source vol ...

(a) Determine the output voltage \( v_{o} \) for the circuit shown as a function of the source voltage \( v_{s} \). (b) Explain why this circuit is referred to as a voltage follower when \( R_{2} / R_{1} \rightarrow 0 \). (c) Explain an application where a voltage follower would be useful.