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TI-83 & TI-84 Graphing Calculators

The TI-83 and TI-84 are the most commonly used graphing calculators in algebra and calculus classes. This category contains questions relating to the functionality of these models.

264 Questions

What does it mean if a TI 83 plus calculator says invalid dim and won't graph anything?

This probably means that a stat plot is turned on and that the lists being used by the stat plot to not have the same number of values in them. To fix the problem, press Y= and deselect any highlighted stat plots and the top.

If you are wanting to view the stat plot, edit the lists used by the stat plot so that they have the same number of values. (These lists are most likely L1 and L2. Press Stat and then Edit to edit them.)

Where can you download a free online TI-84 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.

How do you find Permutation on a TI-83 Plus?

Press MATH and select PRB at the top. The second option, nPr, is permutation.

Example: To find P(8,3) type:

8 nPr 3

How do you solve matrix on ti-84?

To solve a matrix on a TI-84 calculator, first, enter the matrix by pressing the MATRIX button, then select EDIT to define your matrix dimensions and input the values. After entering the matrix, exit the edit mode, then access the MATRIX menu again to select your matrix for operations like finding the inverse, determinant, or performing row operations. For example, to find the inverse, select the matrix, then press x^-1 and hit ENTER. The calculator will display the result.

How do you send a Ti-84 graph to a computer?

Assuming you're talking about the Texas Instruments series of calculators - it has a USB connector - you just need the relevant cable.

How can you tell how much battery is left in a TI-84 calculator?

You can remove the batteries and test their voltages individually. Looking at the weakest one, 1.50 or more volts is good and will have a long life. 1.0 volts or less is almost dead. Sometimes you can tell the battery is weak by the contrast on the screen, but that's a matter of experience with that calculator.

How do you insert absolute value equations into the TI-83 plus?

Use the abs( function. To get to it, press MATH, scroll over to NUM on the top, and choose abs(. Put what is in between the absolute value bars in parenthesis.

For example |X+3| would be abs(x+3).

Another example: 3|X-2| + 5 would be 3abs(X-2)+5.

How do you delete a line when programming on ti-83?

Press the "2ND" key, then DRAW (also the PRGM key), and select "1:ClrDraw."

Is a TI-84 allowed for the ACT test?

Yes calculator TI-84 is permitted unless it's not othe TI model.

Can you send messages on your TI-84 calculator to another calculator?

Yes, if have a programmable TI calculator, such as the TI-84, and most of the higher ones from that point.

If you do want to text message, then you need a calculator-to-calculator cable, and a program on both that allows texting. Of course, because the calculator cable is only about a foot long, it would be slightly redundant to be texting unless instead of talking. For an examples of such a program, try this page: http://www.ticalc.org/pub/83plus/basic/programs/linking/

However, you can't actually text wirelessly.

How do you key a cube function into your TI84 calculator?

Either press the carat button followed by a 3 or go to the math function and select cubed.

How do you put Mario on your TI-83 Plus Calculator?

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.

How do you reset TI-83 plus to default values?

A simple way to reset your calculator to default values would be to take out the batteries. Taking out the AAA batteries that you usually change will have no effect on the settings. If you take off the battery cover, above the AAA's there is a little silver screw. If you unscrew this little screw there is a very small battery under it. This little battery saves your settings wile you change the AAA batteries. If you take out this little battery as well as the AAAs your calculator should reset it's self to default values.

How do you calculate linear regression on on the ti-84 calculator?

First, put the data into lists 1 and 2. (Get to the lists by pressing Stat and then Edit.) Then press Stat, choose Calc at the top, and choose LinReg(ax+b). Press ENTER and it will display the regression equation, giving the values for a and b.

(If you want r and r2 values but don't see them, press 2ND Catalog (above zero) and choose DiagnosticOn. Press ENTER and then calculate the liner regression again.)

If you data is in lists other that 1 and 2, you can specify that by doing something like this:

LinReg(ax+b) L3, L4

How do you turn off a TI-84 plus silver edition calculator?

With most of the TI calculators, you have to press the "2nd" button (usually in the top left corner, by the screen) and then the "ON/CLEAR" button (usually in the top right corner, by the screen).

How do you program TI-83 calculator to input variable values to solve or calculate an equation?

Variables on the TI-84 Plus Silver hold numbers; there are like memory. Here is an example of how to wet the variable C to equal 24:

Enter the number 24, then press the STO> key. Then press ALPHA C (above PRGM). The calculator should show:

24->C

Press ENTER and the variable C will be set to 24. You can check this by pressing ALPHA C and then ENTER.

How do you acces the memory for the Ti83 plus?

You don't, sorry. :) However, if you have a SilverLink cable, you can connect your calculator to your computer, and either save programs and files onto your computer, or load them back onto your calculator.

How do you program games for TI-84 Plus?

Create the following program (hit the PRGM button, then click new & give it a name):

: ClrHome

: Prompt A

: Prompt B

: Prompt C

:(B2-(4AC)) (STO->) X

:If X < 0

:DISP "NO REAL ANSWER"

: (-B+squareroot(X))/(2A) (STO->) Y

: (-B-squareroot(X))/(2A) (STO->) X

:

: Disp Y,X

Note: The (STO->) symbol means press the store key (above the ON button for the TI-84 plus). Also make sure to follow the placing of the parentheses exactly because the answers will be incorrect if you don't do it right.

THAT EXCLUDES THE PARENTHESES OF STO-> ! DO NOT PLUG IN THE PARENTHESES FOR STO-> !

Enjoy never having to deal with that formula ever again!

tastychips

Can you charge a ti-83 calculator?

I am not 100% sure, but when you plug it in to your cable, it might charge. I am sorry if this does not work. Its just a guess

How do you do fractions on a ti-83?

Put in your fraction (ex. 1/2+1/2)(use the divided by symbol for it) then add, subtract, or whatever. Then push the MATH button (underneath the ALPHA green button) hit enter then hit enter again and there is your answer. ex. 1/2+1/2>frac=1

How do you write text on a graph of a ti-83?

Press [GRAPH] to see the graph, then press [2nd][PRGM] to enter the draw menu. If you scroll all the way to the bottom, you will see the Text( option; press ENTER. You can then type anywhere on the screen by using the arrows to move the cursor and then typing. Don't forget to press [2nd][ALPHA] before typing letters.

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Where are the greater than equal signs on ti-84 for graphs?

Press 2ND TEST (above MATH). Then use the left or right arrow key to select LOGIC at the top of the screen.