Question about Texas Instruments TI-84 Plus Silver Edition Graphic Calculator

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Hello,

The matrix Math tools, are accessed by pressing [2nd][MATRIX] ->>[MATH]. Scroll the list to find all row permutations, etc.

Sorry but you will have to implement your Gauss-Jordan method yourself, and interactively.

Hope it helps.

Posted on Oct 16, 2009

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Posted on Jan 02, 2017

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Shift [x^-1] allows you to access the matrix features. Under Names you select the names you want to use for your matrices. Under Math you access the various commands. Under Edit you edit the contents of your matrices.

Mar 01, 2016 | Texas Instruments TI-84 Plus Silver...

The TI-84 allows only real numbers in a matrix.

You can write programs to deal with complex numbers in lists, simulating matrices. One such program is at http://www.ticalc.org/archives/files/fileinfo/250/25081.html

You can write programs to deal with complex numbers in lists, simulating matrices. One such program is at http://www.ticalc.org/archives/files/fileinfo/250/25081.html

Feb 02, 2011 | Texas Instruments TI-84 Plus Calculator

Hi Robert9004x2,

If you want to examine the matrix you want to inverse and, the one that is given you trouble pressing [2nd] [MATRX]. Then stroll and, select the one you want to look at by pressing, [ENTER]. You'll have to press, [ENTER] again and, matrix should display at the Home screen. At the Home when you get to them your looking for the ones that are not square, like 2 by2 or 4 by 4 etc. You might need to re-edit this matrix so, that it is square.

Your trying to invert a matrix that isn't square you might be using using the proper key sequence to create a inverse matrix. Here what the correct inverse matrix look on the Ti 84 Plus Home screen.

**And pictured below is a Matrix is being inverted by using the ^ and the -1 keys. Which to inverse a Matrix on the Ti 84 Plus you have to use the [x^-1] key.**

**This is not the proper way to inverse a Matrix on the Ti 84 Plus. The proper way to inverse of a matrix, the [x-1] key must be used, instead of pressing the sequence [^][-][1]. The [x-1] key is the official inverse key and is located right under the Math key. It is also the same key that you use to get to the matrix menus. The [^][-][1] sequence is only raising the matrix to the -1 power and, will cause an error too. If you need any more help, just post a comment and, I'll respond quickly.**

Jan 18, 2011 | Texas Instruments TI-84 Plus Calculator

Hi biancaaii,

You need to re-install the Ti 84 Plus OS, ASAP!!! You can fix the problem by installing the newest**Ti 84 Plus 2.55v. MP OS**. operating system.

If you have a friend that has a**Ti 84 Plus or, Ti 84 Plus Silver Edition **you can connect the two calculators together through the IO link ports and, they can send you a copy of their OS while you receive it on your **Ti 84 Plus**. Hopefully your friend will have **Ti84 Plus 2.55v. MP OS** on their calculator or, it might not work.

If you can't find a calculator to connect to you can connect your**Ti 84 Plus** to a computer that has **Ti Connect** software on it. If you need to connect your** Ti 84 Plus** to a computer make sure the Ti Connect software is operating properly. You do not want any hang-ups while installing the **Ti 84 Plus OS. **Be careful, even a power failure during the process of installing the OS will destory your calculator.

Procedure 1 to installing the latest**Ti84 Plus 2.55v. MP OS **

1). You can get the**latest copy of Ti84 Plus 2.55v. MP OS **and, guidebook by going to the Texas Instruments web site. You can get to that site instantly by clicking, "Ti 84 Plus 2.55v. MP OS!" Once your at the Ti site click the Download Item, **"Ti84 Plus family operating system"**. Next you can login or, click **"continue as guest**". I'd would click the **"continue as guest**". Once you have click, **"continue as guest"** the **Ti84 Plus family operating system **will download to you.

Next, click "**SAVE" **and then a window to a folder will pop up. It is probably a window to a folder that you download too. If so, you may want to change it and, save to this folder, **"My Documents \ My TI Data \ Downloads".** You can also go back and, download the Ti 84 Plus guidebook too, if needed.

Link your computer and,**Ti 84 Plus** calculator with the** USB cable** or,** Direct Black Link cable** that came with the **Ti 84 Plus** calculator. Next, drag the **Ti 84 Plus 2.55v MP OS** that you saved earlier in "**My Documents \ My TI Data \ Downloads"** out of that folder and, drop it in the "**Ti Connect"** icon on the desktop. Click, **"Continue"** when the "**Erase Warning**" pops up and, the new **Ti 84 Plus 2.55v MP OS** will begin to install.

Next, the**Ti Device** window should pop up and, highlight the port when it finds what your **Ti 84 Plus** is using, **USB1 cable** or, **Direct Black COM1**.

When the**Ti Device Explorer** finds and, highlights your calculator's information click, "**Select**." Then click, **"Yes**" when the next window shows up with your calculator's information and, the OS will continue to download. Upon completion the newest **Ti 84 Plus 2.55v. MP OS** will be installed.

If you run into any trouble with software or, drivers just comment to what failed at this posting and, I'll be glad to help you.

You need to re-install the Ti 84 Plus OS, ASAP!!! You can fix the problem by installing the newest

If you have a friend that has a

If you can't find a calculator to connect to you can connect your

Procedure 1 to installing the latest

1). You can get the

Next, click "

Link your computer and,

Next, the

When the

If you run into any trouble with software or, drivers just comment to what failed at this posting and, I'll be glad to help you.

Jan 12, 2011 | Texas Instruments TI-84 Plus Calculator

A singular matrix has no inverse. It's the equivalent of zero: trying to take the inverse of zero is an error. Check the matrix to make sure you have entered it correctly. If the error persists, could you post the matrix in question?

Dec 10, 2010 | Texas Instruments TI-84 Plus Calculator

Press 2ND [MATRIX] to bring up the matrix menu. Select the matrix whose inverse you want. Press x^-1 to invert it. x^-1 is on the same key as [MATRIX], the second key down from the ALPHA key on the leftmost column of the keyboard.

Nov 02, 2010 | Texas Instruments TI-84 Plus Calculator

There is no command on the calculator that allows you to do it.

You can use the calculator to evaluate the minors for each element (the determinant of the matrix that is left when you remove the column and the row that have that element as intersection).

Here is an example how to calculate the cofactor of the _11 element of a 3X3 matrix.

You can use the calculator to evaluate the minors for each element (the determinant of the matrix that is left when you remove the column and the row that have that element as intersection).

Here is an example how to calculate the cofactor of the _11 element of a 3X3 matrix.

- I defined a 3x3 matrix called b
- I defined a submatrix by removing the first row and the first column of the b matrix.
- The submatrix is called min11.
- Its determinant is the minor of the _11 element of matrix b.
- The cofactor cof11 of _11 element of matrix b is the product of (-1) to the the power (1+1) and the minor of the _11 element.
- The cofactor is represented by the last result to the right of ->cof11, that means b22*b33-b23*b32.
- For additional information refer to your algebra book.

Jan 27, 2010 | Texas Instruments TI-83 Plus Calculator

the cofactor (C) of Matrix (A) = (det(a) times (A)^-1)t

Cof A=(detAxA^1)t

Enter a matrix for (MatA)**AC**

**shift 4 7** gives det(_

**shift 4 3** shows det(a **)**<**-**end Paren

**= x** shows ansx

**shift 4 3** shows ansxMatA -1x

**=** you'll see a Matrix **AC** to get out

**shift 4 8** gives Trn(

**shift 4 6** shows Trn(MatAns**) =**

The Matrix graph shows all the Cofactors

Cof A=(detAxA^1)t

Enter a matrix for (MatA)

The Matrix graph shows all the Cofactors

Jan 27, 2009 | Casio FX-115ES Scientific Calculator

i finally fixed my calculator~

1. if you have a ti 84 plus silver, plus, or just ti 84, find a friend who has either a ti 84 plus silver, plus, or just ti 84. (as long as the number is the same)

2. link the two calculators together

3. using your friends calculator, press the [2nd] and the one next to alpha [x,t,o,n]

4. go all the way down to [send os]

5. send it to the other calculator and your problem should be fixed

1. if you have a ti 84 plus silver, plus, or just ti 84, find a friend who has either a ti 84 plus silver, plus, or just ti 84. (as long as the number is the same)

2. link the two calculators together

3. using your friends calculator, press the [2nd] and the one next to alpha [x,t,o,n]

4. go all the way down to [send os]

5. send it to the other calculator and your problem should be fixed

Aug 27, 2008 | Texas Instruments TI-84 Plus Silver...

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