1. The problem statement, all variables and given/known data I'm an electrical engineering student and in this exercise I'm asked to calculate (and simulate in MicroCap or Multism) voltage gain and output resistance. The problem is that I don't understand how the voltage source (s) is/are connected according to this schematic diagram. On the left I can see "u1" but then then I also see +10V and +5V. My teacher didn't give me a value for u1, do I need three voltage sources in this circuit or are +5V and 10+ readings I must get by setting a value for u1 based on the given data? I'm so sorry if the answer to this is too obvious, I'm learning and honestly, I don't get it. That's why I'm here :) Thanks a lot for your help.