Calculating The Inverse Of A Matrix On The TI-84 Plus C Silver Edition ...

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Solution 34852: Calculating the Inverse of a Matrix on the TI-83 Plus and TI-84 Plus Family of Graphing Calculators.

How do I calculate the inverse of a matrix on the TI-83 Plus and TI-84 Plus family of graphing calculators?

The example below will show how to calculate the inverse of a square matrix.

For Example: Find the inverse of matrix A

First enter the matrix: 1) Press [2nd] [MATRX] to enter the matrix menu. 2) Press [Left Arrow] to scroll to EDIT. 2) Press [1] to edit Matrix A 3) Input the dimensions of the matrix [2] [ENTER] [2] [ENTER] 4) Input the values for the elements of the matrix [1] [ENTER] [3] [ENTER] [2] [ENTER] [5] [ENTER] 5) Press [2nd] [QUIT] to return to the home screen To find the inverse of matrix A 6) Press [2nd] [MATRX] [1] [x-1] [ENTER]

Please Note: A singular matrix does not have an inverse. A singular matrix by definition is a matrix whose determinant equals zero.

Please see the TI-83 Plus and TI-84 Plus Family guidebooks for additional information.

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