WolframAlpha, the “computational knowledge engine,” is fantastic for those interested in math, science, engineering, music and more. If you haven’t heard of it, it’s worth investigating. It’s not a web search engine like Google or Bing, but instead is a searchable database of just about anything science-related.
WolframAlpha cranked out this integral calculus problem almost immediately! I wish I could say the same about my HP calculator!