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Some of you may already know what's called "EEPro" or "MEPro" for the TI-89 and TI-92. It is an official program that TI puts in the 89 by default. If you don't know it, EEPro-89 is basically a program described by TI like this: "This application solves the problems of electrical engineering. It is composed of three modules: Analysis, Equations (700 equations grouped into 16 subjects) and Reference. " In short, a complete and very powerful application about Electrical Engineering. Well, FormulaPro is the 2nd part ("Equations") of our project to port the EEPro-89 suite to the Nspire. But we improved it, naturally. A lot. (And we already have plans and written code already ready for version 2.0 which will be even more awesome and more powerful.) What FormulaPro right now is capable of, along with its website, is : -to be able to run on any OS 3.x and any Nspire model and to be able to run on the computer software too with auto-resizing frames -Mouse and keyboard input support, on both Software and Handheld -to be able to let users generate their own pack of equations, smartly (variables and units are bound), within categories and sub-categories, -to be able to solve intelligently solve the equations it's given, contrary to the 89 version, where the user had to select what equations had to be used : Indeed, here you just have to enter what you know already, and it will automatically try to solve for what it can. -it can very easily let you chose the unit/subunit you want to enter your data in. (for example Hz/kHz/MHz, °C/°F/°K etc.) -it can show you the used formulas of the current sub-category in "PrettyPrint"