1. Design a differential amplifier with inputs v1 and v2 and an output vO = 100(v - v1) using only one OP AMP. All resistances must be between 10 kΩ and 1 MΩ.
2. Using no more than two OP AMPs, design an OP AMP circuit with inputs v1, v2, and 100 mV and an output vO = -3v1+ 2v2 - 300 mV.