Restored Texas Instruments TI-89 Titanium Graphing Calculator (Refurbished)

Refurbished Texas Instruments TI-89 titanium graphing calculator packaging may differ. Includes battery cover and USB only. The TI-89 Titanium lets you perform basic math, algebra, calculus, graphs, matrices, and statistical functions creating animations, graphing 3-D rotations, and plotting contours. Graphing functions include basic function graphing, parametric graphing, polar graphing, sequence graphing, 3-D graphing, and differential-equation graphing. Additionally, the TI-89 Titanium includes symbolic manipulation, constants, and measurement units, statistics and data plots, a numeric solver, a text editor, programming capabilities, tables, a split-screen function, variable management, and the ability to link to other Calculators or a computer. The TI-89 Titanium's flash technology allows upgrading to future software versions without having to continually invest in new calculators.

188 KB RAM and 2.7 MB flash memory for speed Plenty of storage for functions, programs, data Large 100 x 160-pixel display for split-screen views USB on-the-go technology for file sharing with other calculators and connecting with PCs Matrix operations include inverse, determinant, transpose, augment, elementary row operations, and reduced row echelon form; matrix elements can be real or complex and numeric or symbolic