Hi, I am trying to do my homework but I have a lot of problems. The second part: The text says that We can use a very large R in parallel with Cf, I think I have to put on a R about 1Mega but I am not sure of that. a) The low gain that I obtained is 17 dB, the question is why is not equal to Ci/Cf. b) I think I have to put a step source and then I cant understand the question. Thanks.