Texas Instruments Graphical Calculator Ti-83 plus

This is a graphical calculator. I bought the calculator for my SAT math level II exam and used it for 1 month. So it is in very good condition. I bought it from Stadium (Dhaka) for Tk 9000 because it was very difficult to find in Dhaka, only 1 store in the whole Stadium area had it.

Features: It contains all the features of a scientific calculator as well as function, parametric, polar, and sequential graphing capabilities; an environment for financial calculations; matrix operations; on-calculator programming; and more. Symbolic manipulation (differentiation, algebra) is not built into the TI-83 Plus. It can be programmed using a language called TI-BASIC, which is similar to the BASIC computer language.

Instruction manual is available online: http://education.ti.com/downloads/guidebooks/graphing/83p/83m$book-eng.pdf

Many custom programs that might cater to your needs may also be found online to be used in the calculator.

Bonus: I made many custom programs for my use, which you would get along with the calculator. For example, I made programs to detect whether a certain equation defines a parabola, hyperbola, ellipse, or circle, and another one to return solution of quadratic equations in surd form.

I can meet at Bata Signal, Elephant road, and deliver the calculator there along with the instructions on how to use it. This is a very powerful device if used properly.