#### movinghoon96

##### Newbie level 5

Hello, this problem is from (Razavi's Design of Analog CMOS Integrated Circuit, p.79, problem 3.31)

Before asking, I'd like to tell you i've tried and couldn't find answer yet.

1) tried 2 solution : KCL, Superposition

2) find solution on internet : it include only problem ~3.28

addition : using 1), I wanted to simplify answer, so I set some conditions. yes,it didn't work.

both of mine included 3 numerator, but answer has only 2.

Its ok not solving problem, just want to know how to solve it. - already spent almost 40m over...

Thank you.