Based on PebbleFormulas it's a quick and useful way to access to a many and always new formulas of Algebra, Geometry, Calculus, Trigonometry, Biology, Physics, Chemistry e le Conversion.
In italiano!!!
Presto nuove formule e funzionalità!!!

Se volete contattarmi: [email protected].
The author of PebbleFormulas is Devin Simmons: [email protected].