Not a question, but useful websites: www.wolframalpha.com - if you don't have mathematica, it's the next best thing. does any calculation www.cramster.com - all homework problems for common university books solved and work shown http://www.khanacademy.org/ not sure what it is myself, but i hear great things about it. one of my friends learned algebra from it by himself and tested into a higher math class.
Excellent information :D
An example integral to put into wolfram "Integrate x^2 from 3 to 5" it'll give u the answer and other useful data like graphs
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