This is the Formula Resource. If you have a formula to contribute, please find the right category and then add to it.

Note: this area is "heavily moderated" so don't be surprised if comments are edited or even deleted - we want to keep this clean and non-confusing for visitors.

Also, if you can, please post your formulas in Latex.  If you are unsure of how to use Latex or just don't want to, don't hesitate to post them in plain text. - Ricky