As you know..

It's exam time, its cram time!

But I gotta doodle to concentrate, y'know.

.

That math stuff up there is about phasors and phasor diagrams in sinusoidal steady-state analysis. Err...stuff.
Actually, my lecturer saw it because I had gone to see her to ask a few questions. She just laughed.

I think my cousin wore a similar outfit once...

Y(^_^)Y Nao