After searching for a long time for a decent math program for both my Palm and my computer, I realized the main advantage of my TI-89 is its keyboard with 30+ keys devoted to commonly used functions and its streamlined menus and history that allow me to quick graph functions and work to find solutions, take derivatives, etc.
It's just too much work to enter equations on a computer, let alone a PDA.
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After searching for a long time for a decent math program for both my Palm and my computer, I realized the main advantage of my TI-89 is its keyboard with 30+ keys devoted to commonly used functions and its streamlined menus and history that allow me to quick graph functions and work to find solutions, take derivatives, etc.
It's just too much work to enter equations on a computer, let alone a PDA.