My treo and advanced math

Everyday we use math, you may like it or not, the truth is that is a known fact.
Some of  us are involved mathematical or scientific activities, wich is my case, as an economist i use math everyday to explain how the economy and some other things.

On a pc there are a lot of apps for advanced math but for the portable devices sometimes you can find on a dead end alley. Sure there are a lot of calcs some of them are impressive like PowerOne Graph (one of my favs) wich cost near 60 bucks, other one great is Spacetime wich cost 10 bucks. But recently i found a very advanced app wich is free and it is called LyMe and it is very advanced, a bit complex but it can solve very complex mathematics like equations, derivates, matrix and integrals. If you use complex math i recommend you this app, free and with a very complete manual. It is a good companion with a graph calculator.