Question about Texas Instruments TI-92 Plus Calculator

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Matrixs I simply have no idea how to enter a matrix into my TI-92 Plus.

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I am looking for a link cable for my son's TI92plus to use with our home computer so he can download to his calculator. Can you tell me where I can get one? thank

Posted on Aug 05, 2008

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How do you find the value of a determinatant on a Silver Plus calculator?

Open the Matrix function by pressing 2nd [x^-1]>EDIT.
Once Matrix is created, press [2nd][x^-1]>MATH>[1:det(] complete the matrix name and then press ENTER. If matrix is non-singular, you will get your answer.

Nov 29, 2012 | Texas Instruments TI-84 Plus Silver...

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When i try to create an inverse matrix it says i have invalid dim

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

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On my ti 84 every time I try to calculate the inverse of my 3x3 matrix it says ERROR: SINGULAR MAT. what should I do?

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

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I get ERR: DOMAIN everytime I try to inverse a matrix

  1. First, Press the "MATRX" button

  2. Next, enter a matrix into the calculator. To enter a matrix, press the arrow that points to the right two times when the cursor highlights letter "A." This moves the top cursor to "Edit." Press "Enter" to select the "Edit" option.

  3. Next,, enter the matrix's numbers into the matrix on the calculator. Press "Enter" to move the cursor over one column. Press a button that has a dash symbol within parenthesis [( - )] to move down one row. Repeat the steps until the matrix is completed.

  4. Next, Press "2nd" then "Mode" to go back to the home screen. Press "MATRX" to enter the matrix screen again.

  5. Finally, press "Enter" when the cursor highlights matrix "A" then press "[x^ -1]." Your screen should read "[A]^ -1." Press "Enter" again to display the inverse matrix.

    I got this information from

Dec 07, 2010 | Texas Instruments TI-83 Plus Calculator

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Solve a matrix of complex numbers using ti89 or any other ti calculator

Well, the equation is Ax=b and we want so solve for x
There are several ways of entering the data, but this is one way
Code: A=[15+35i 29+1i; 46+13i 62+3i]
x=A\b which has the trivial solution x=[0;0] (the ";" means "next row", a space next column.) To input a matrix use APPs then Data/Matrix Editor then New. Then change Data to Matrix. Put in the name such as "AA" in the variable field. Then enter row and column dimensions. Then edit as a spread sheet. Use F6(util) to delete a column or row. To manipulate matrices, exit the matrix application, then go to MATH then Matrix. Notice that J(RowOpps) is available. Good luck and thank you for using FixYa! We would sure appreciate a 4 "thumbs-up" rating for this answer. Happy holidays!

Dec 05, 2010 | Texas Instruments TI-84 Plus Calculator

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I need to enter a 3 x 3 matrix. It is 4 columns and 3 rows. How do I enter it in the TI-83 +?

  1. Press [2nd] [X to -1] under [MATH[ to access the (Matrix) menus.
  2. Use right arrow to highlight [EDIT]
  3. Press [1:A] to edit (create from scratch) the A matrix.
  4. On the line MATRIX[A] line cursor blinks on 1
  5. Enter m dimension (3) and press [ENTER].
  6. Cursor moves to the second dimension (n). type 3.
  7. Press [ENTER].
  8. A 3x3 matrix template is displayed with A_11 element highlighted.
  9. Replace the value 0 with your value for A_11.
  10. Press [ENTER].
  11. Type a value and press [ENTER].
  12. When finished, press [2nd][QUIT] to exit the matrix editor.
Your matrix is ready to be operated on (squaring, multiplication by a scalar, inverse if matrix is non-singular, determinant.) All operations are available under [2nd][X^-1](Matrix) [=>][MATH].

Feb 03, 2010 | Texas Instruments TI-83 Plus Calculator

1 Answer

Ti 89 sum problem

To long ago and not enough info. for additional help

Jun 12, 2009 | Texas Instruments TI-89 Calculator

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ERR:SINGULAR MAT when finding inverse of matrices

If a matrix has a determinant of 0, this error appears. If you get this error, your matrix doesn't have an inverse.

Jun 02, 2009 | Texas Instruments TI-84 Plus Silver...

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Solving matrix

Go to your matrix button and enter a "3x4" matrix.

Then enter it as follows:

-3 4 5 7
4 3 2 9
-5 5 3 -10

Then exit out and go to "2nd->matrix->math->rref(". Then press enter.

Your screen should look like this:


Then go to matrix and select your 3x4 matrix, press enter and close it with a parathesis. Your screen should look like this:


Press enter and the screen should say this:

1 0 0 2
0 1 0 -3
0 0 1 5


Hope this cleared up the confusion!


Mar 03, 2009 | Texas Instruments TI-84 Plus Calculator

2 Answers

Help with a TI-92

try to push the green diamond button once then use the plus or minus keys to change the brightness of the screen.

Sep 03, 2008 | Texas Instruments TI-92 Plus Calculator

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