Hey guys, I see this website a lot when lot when looking for help so I made an account since I cannot find help with this problem anywhere. 1. The problem statement, all variables and given/known data Use the ideal diode model to analyze the circuit below (circuit (a) in the attachment). Start by assuming D1 is off and D2 is on. 2. Relevant equations Ohm's law, Voltage-division principle 3. The attempt at a solution The textbook has the answer (Electrical Engineering Principles and Applications 5th Edition, by Hambley, Example 10.5) but I do not understand it. The answer they have is the second attachment, and the circuits are in the first one. I am having trouble with a few simple things. I understand that iD2 = 0.5mA from Ohms law, but cannot figure out why vD1 = +7V. With both those values, I am unsure why the first assumption (D1 off, D2 on), is incorrect, and why the fact that vD1 = +7V not consistent with the first assumption? From there, how did they solve for vD2 = -3V with the second assumption (D1 on, D2 off), and why is that consistent with the assumption? I feel like this is a simple question but for some reason I find this confusing. Thanks for the help.