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You can't get a previous answer, just a previous question (input equation). Press [2nd][ENTER] to scroll up to previous equations entered, then hit [ENTER] to evaluate it again, or edit it before evaluating it. In the future, you can put press [STO>][XT0n] at the end of your equation to save the answer to the variable X, which can then be used in other future equations. You can, in fact, use all 27 variables A-Z and theta to store temporary answers.
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Does the TI83 use an operating system?
No. I believe TI83+ and TI84 do use an operating system.
Do they make software for the TI83?
Yes. The TI83 has several applications that can be downloaded onto the TI83, mainly those made by Texas Instruments. Also, you can write your own software.
How do you enter data into TI83 to find explained variation total variation?
Some TI83's can be set up differently, so it is highly recommendable to read the user guide for the TI83 in question. The user would need to go into the VarStat option and enter all the appropriate fields to have the calculator bring in the appropriate variables and totals.
Can you replace the TI83 with a cheaper calculator in High School math classes?
It will depend on the class. Nothing is impossible without the TI83, but some classes might require it so you can graph and write programs to go along with the math curriculum.
Is there an online TI 83 graphing calculator?
There are online graphing calculators. However, as of writing, there is no emulated TI83 that runs within your browser. On the other hand, if you have a Ti83, it is possible to copy its ROM to run an emulated TI83 on your desktop via one of many emulators.
Is a TI83 required for college?
No, it really depends on the college. Some colleges don't allow any calculators for their math classes. Everything that can be done on a TI83 can be done with the human brain, so some professors make tests with easier computations so that you don't have to use a TI83
How do you put a colon on ti83?
Press "ALPHA", then press "."
Batteries on ti83?
The TI-83 calculator uses 4 AAA batteries.
How do you make a TI83 calculate wrong?
You cannot. A calculator is programmed. It is made to calculate correctly.
How do you graph an equation in Ti83 calculator?
Go to the y= button, and type in your equation by the y1 (if there's 2 equations, press enter and type the 2nd one in by the y2). Then press graph.
How do you take notes with ti83?
http://education.ti.com/educationportal/sites/US/productDetail/us_notefolio_83_84.html
Is there a factorial button on a TI-83 Plus?
Yes. To access it, press [Math], scroll over to PRB [>] [>] [>] [>], and select option [4].
