Welcome to ExampleProblems.com!
|It's like asking why Beethoven's Ninth Symphony is beautiful. If you don't see why, someone can't tell you. I know numbers are beautiful. If they aren't beautiful, nothing is. - Paul Erdős|
Register. Log in. Click the 'edit' button at the top of any screen. Follow the example of the problems that are already up.
The math code works just like TeX. I suggest looking up symbols and functions in other problems and seeing how it's done there.
Here's a good list of symbols: http://meta.wikimedia.org/wiki/Help:Formula
Here is a bunch of TeX documentation:
Thank You for contributing!