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Texas Instruments TI-83 Plus Graphing Calculator - $35 (Palatine)
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The Texas Instruments TI-83 Plus is an ideal unit for any math student, combining powerful features for graphing and statistical analysis. The LCD screen displays 16 characters over 8 lines. Though the TI-83's keyboard layout might seem daunting to those who've never laid eyes on a graphic calculator before, the helpful, if intimidatingly thick, manual will get you up and running quickly. The TI-83 Plus includes function, parametric and polar, and sequence plot modes. You can store, graph, and analyze up to 10 functions, 6 parametric and polar functions, and 3 sequence functions. The TI-83's Draw operations allow you to annotate graphs. Along with the advanced math and science features, the TI-83 also includes such financial functions as cash flow, amortization, and time value of money.
The TI engineering calculators are a great asset within high school and college math, science and engineering coarse work. The calculator is fully functional and operational. Asking $35.00. Located in Palatine (53 and Northwest Highway). If interested, please call at show contact info . I will not respond to emails.