Most Difficult Math Class?

I'm a freshman in college right now, and I'm getting ready to take my Calculus II final here later this week.  I've always been very good at math, but this last semester was by far the most difficult math I've ever taken.  For the first time in my life, I'm actually having to study outside of class, and I'm not certain of at least a high B on this test.

From talking to some of my sophomore buddies and a few of the teachers I'm on good terms with I've heard that Calc II is about the hardest math I will ever take.  Would you guys agree? If not, what was the most difficult math for you?

>>34
WTF? Baire is so easy to prove, all you need to do is to make use of the Cantor's intersection theorem and just make a closed set not intersecting with each nowhere dense set (easy to do, just get an open sphere to do the job since it is nowhere dense, and then take a the closure of the open sphere), and make the (n+1)th closed set be within the nth (possible, since the nth closed set is itself complete), and intersect all of them, which has a non-empty intersection which in the set, and is not in any of those nowhere dense set.

Hey, I've just proved it.