So I'm rolling along second year just fine. Ok its hard but do-able. Then this demonic entity finds it's way to the whiteboard.

First of all what the heck? Secondly I don't even know where to begin or what question to ask.

As far as I remember this was a basic RC series circuit, then he began deriving this equation.

We will be expected to derive these types of equations to start with and also much more complicated circuits.

I done quite well in calculus last semester, so I'm not a complete n00b no more. But this looks to be above my pay grade.

Ok so I guess I want to go back to first principles here. I need to learn how to do this type of thing. It looks like RLC circuits in time domain rather than phasor. Is that correct?

I guess I'm looking for power words or information so I can research this. Anything really to get me going in the right direction.