Well, it may not have been yesterday, but it was a few days ago. I was up into the wee hours of the morning studying calculus for my most recent exam. The whole engineering-student-by-day thing ran into the photographer-by-night's time slot, and I managed to get a self portrait of my sleep-deprived frustration of integrating the square root of x to the 4/3 minus 1/16 x to the 1/3 plus....
What's your engineering discipline? I'm an EE myself. Enjoy the college studying. You won't have this much fun studying again, until its time to take your PE. THEN you'll REALLY have fun.