Essential for 16-18, university and beyond, the TI-89 is the most logical graphing calculator for advanced mathematics studies. Enhanced with Flash technology, this graphing calculator gives you the flexibility to add calculator software applications and additional functionality, providing long-term value. The TI-89 is allowed for use on the AP Calculus, AP Statistics, AP Physics, AP Chemistry, PSAT/NMSQT, SAT I, SAT II Math IC & IIC.
3-D Rotation and Contour Plots:
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Comments about Texas Instruments Texas Instruments TI-89 Titanium Graphing Calculator:
This picture is the original TI-89, not the Titanium. It's a great calculator/mini computer. but not the Titanium.