I tried to solve this block but I am not sure if the end result is any good, some feedback would be nice. enter image description here

  • $\begingroup$ Do you want positive or negative feedback? Jokes aside, your working out looks correct. $\endgroup$
    – fibonatic
    Commented Aug 31, 2020 at 22:21

1 Answer 1


Your answer is incorrect. Problem lies in going from step 2 to 3. (1-G5) term can be taken in denominator of G4 only if they are in feedback loop. In this case, they are not in loop and as a result, your answer is wrong. The correct answer would be:
Thank you


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