TI-89 is the perfect graphing calculator for advanced mathematics, physics, engineering and statistics.
TI-89 Titanium is Xilinx’s most powerful graphing calculator. It comes with lots of preloaded applications and has more and newer features than the TI-89 model. A built-in USB port with a cable is included and TI-89 Titanium comes with three times more onboard memory than the standard Texas Instruments TI-89.
Regardless of the complexity of your calculation, the TI-89 Titanium help with everything. This calculator is among other things recommended for most mathematical studies, in addition, includes TI-89 Titanium also symbolic manipulation, constants and units of measurement and statistics, a numerical problem solver, a text editor, programming capabilities, tables, a split-screen function, variable management, and the ability to link to other calculators or a computer, giving you the very best study calculator.
You can find more information and download the manual for your TI-89 Titanium calculator here (PDF document).