The Texas Instruments TI-89 Titanium Graphing Calculator is a handheld device designed for advanced mathematical calculations. With its regular-sized display and key size, it provides a user-friendly interface for solving complex equations and creating graphs. This model is powered by batteries, making it convenient for on-the-go use. Additionally, it features USB connectivity, calculus capabilities, and programmable functions, making it a versatile tool for various mathematical tasks. The included cover ensures protection and durability for extended use.
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