What equation can I use to calculate the number of miles in a degree of longitude for a given latitude? [more inside]
posted by Glendale on Aug 19, 2008 - 9 answers

I'm looking for some help with a math equation / algorithm I'm trying to create. I'm a programmer by trade and not very good at math so I'd like some help with this or perhaps a site where I could pay someone to come up with the equation I'm looking for. I considered rentacoder or elance however I'd be concerned if the companies there had the proper math knowledge. A lot of claims get made on those sites that turn out to be false. [more inside]
posted by JohnGL on Jul 3, 2008 - 6 answers

Help with a large, stupidly theoretical question involving sea rise, population growth, and human development... should be fun. [more inside]
posted by omnigut on Jun 12, 2008 - 18 answers

Is there a mathematical formula relating time and memory? [more inside]
posted by bru on Jan 31, 2006 - 16 answers