The Texas Instruments TI-89 Titanium Graphing Calculator in black/gray with cover is a handheld device that operates on batteries. It features a regular-sized display and regular-sized keys, making it easy to use for calculations and graphing functions. This model from Texas Instruments is designed for calculus and is ideal for business, industrial, and educational purposes. Made in China, this graphing calculator is a powerful tool for solving complex mathematical problems efficiently. Comes with slide cover. Tested and working
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