1. The problem statement, all variables and given/known data Need help on part a. and c. 3. The attempt at a solution Part A Since Va = 4V then pin 2 and 3 also have 4v. Would that mean that Vin is = 4v as well? Im just confused how to find I1. Also im not sure how to find Vc. Part C As for part c, Im having trouble with it entirely. Any help is appreciated!