Interesting Site

Wolfram.com is one of my favorite websites simply because of the huge amount of free science and math resources they have. Wolfram's Mathworld and Scienceworld are particularly neat, but here's a cool demo of Mathematica's technology: http://integrals.wolfram.com It will integrate even the most complex functions. You have to be careful to get the right syntax (typing in cos[x] will do do nothing, it's Cos[x]), but it's pretty neat.