{{fa>pencil?32}} For the inverting amplifier, derive the voltage gain. Use the procedure that was used for the non-inverting amplifier.\\ Take into account that for the differential gain $A_D$ of the ideal OPV applies: $A_D \rightarrow \infty$.\\ This also applies: $1/A_D \rightarrow 0$ , **but** it doesn't always apply ${{C}\over{U_x \cdot A_D}} \rightarrow 0$, for an unknown constant $C$ and a voltage $U_x$! * What is looking for? * Number of variables? * Number of necessary equations? * Establishing the known equations * Derivation of the voltage gain \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ Which type of amplifier (inverting or non-inverting amplifier) has the lower input resistance? Why?