2 step forward and 1 step back

After having two relatively good nights of sleep, I was woken up after a half hr's sleep by my very rowdy, very drunk roommates. Sigh, another sleepless night for me.Oh well... Decided not to waste my time, being grumpy, and decided to try some calculus mock exam questions. If I can do them while grumpy, half asleep and tired, I should be able to do them well during the actual exam. Ah well, all the best to me yeah.