One can purchase a TI 84 Plus Silver Edition from the following shops: Amazon, Calculators Direct, eBay, Walmart, Target, eBuyer, Staples, Best Buy, to name a few.
On my graphing calculator, a TI84 Plus, I can enter the equation into the Y= (a button) and then graph it by hitting the Graph button.
I believe that that isn't possible unless you have it ported to ti84 or you know how to. the file format is different, and the game is built for a separate calc.
No. I believe TI83+ and TI84 do use an operating system.
Short answer; you can't. But you can purchase (or borrow) a TI84 calculator and use the TI83's transfer cable to transfer data from the 83 to the 84 to your mac computer (the TI84 comes with a USB transfer cable).
Either press the carat button followed by a 3 or go to the math function and select cubed.
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TI84 calculators can be purchased at retail stores such as Best Buy, Future Shop, Staples and Office Depot. Prices range at approximately $140 and can differ by retailer.
Press 2ND MATRIX (above x-1). Select EDIT at the top with the arrow keys. The select matrix [B] and press ENTER. You can now edit the matrix. (Use the numbers at the upper right to set the size.)
Press your Y = button, press X, press second button and then catalog. Press up button to save time and scroll up to > and press enter. then 4. This, >, symbol may be someplace else, but I do not renumber where and all symbols are in the catalog.
The TI-85 was the second graphing calculator made by Texas Instruments. (The first was the TI-81). The TI-84 is a much newer version and has more functionality and memory. The only real advantage that the TI-85 has over the TI-84 is that it costs less. As far as where you are allowed to use the calculator, almost every test or class that allows a TI-85 will allow a TI-84 as well. The TI-84 is a much better investment. (If the TI-84 is too expensive, look into getting a TI-83. This model is also newer than the TI-85.)
To graph inequalities (y is 'less than', 'greater than', 'less than or equal to', or 'greater than or equal to'), turn on the Inequality Graphing app. Do to this, press APPS and choose Inequalz. You should see the 'less than', 'greater than', 'less than or equal to', or 'greater than or equal to' symbols at the bottom of the Y= screen. To change and equals sign to one of those symbols, highlight the equals sign, press ALPHA, and then press the button directly under the sign you want to use (ALPHA TRACE for greater than, for example). To turn of Inequality Graphing, press APPS, choose Inequalz, and then choose Quit Inequal.