1. The problem statement, all variables and given/known data I have to find Vo in every diode state possible. We know diode Vf = 0.7 2. Relevant equations Va-Vc < 0.7 = diode OFF Va-VC > 0.7 = diode ON 3. The attempt at a solution State 1: if D1 OFF and D2 OFF Vo will be equal to Vi State 2: if D1 OFF and D2 ON Vo will be equal to Vi State 3: if D1 ON and D2 OFF Vo will be equal to 0.7 since the diode is limiting component it at 0.7 State 4: if D1 ON and D2 ON Vo= impossible since D2 will not receive enough volt to activate, it will receive less than 0.7 as the resistance will take some.