Ideal diode questions final soon urgent help its actually an example in my book (sedra and smith, 5th ed) which i fail to understand completely!!! Question: the question is : Assuming the diodes to be ideal find V and I in the circuits. I obviously went through the example but it totally escapes me. Relevant info : They've first assumed that D1 is conducting and proceeded from there. i'm lost. i tried to assume that d1 is not conducting and proceeded from there but i didnt know how to check my answer at all. please help. i'm soooooooooooooo lost and its like a bug in my system. i think i understand basic diodes but this assumption stuff is really confusing.