TI-89 Titanium

The TI-89 Titanium builds on familiar graphing capabilities for Advanced Placement math and science courses. Fully compatible with the TI-89, the TI-89 Titanium has more than twice the memory and adds a USB port for even easier connection to computers. An optional adapter allows student calculators to connect to TI presentation tools.
Explore differential equations and slope and direction fields. Perform Cartesian, parametric, polar, sequence, and 3D graphing. Differential equations can be solved numerically, symbolically, and graphically. See expressions the way they appear in textbooks with Pretty Print capability. Connects to a computer (with optional Graph Link) for upgrades and new features. Add Handheld Software Applications (Apps) for specialized use.