it is asked to make a non ideal inverter opamp that has an input of 2mV or and get an output of -100mV, so I think the next circuit should suffice.
But later there is extra questions: the error in the output voltage must be less than 0.1%, ¿What is the gain in open loop of this op-amp?¿What is the error if the gain is 10000?
I understand there should be a Beta parameter
and the closed-loop gain is
but then how can be calculated he error or make it is between the limits required?