Knowledge Base

Solution 11716: Calculating the Inverse of a Matrix on the TI-89 Family, TI-92 Family, and Voyage™ 200 Graphing Calculator.

How do I calculate the inverse of a matrix on the TI-89 family, TI-92 family and Voyage 200 graphing calculator?

The example below will demonstrate how to calculate the inverse of a matrix on the TI-89 family, TI-92 family and Voyage 200.

Example:
Find the inverse of matrix A:

Solution:
To enter the matrix:

1) Press [APPS] [6] [3] (If the Apps Desktop is on, press [APPS], select Data/Matrix Editor, and press [3].)
2) The type will be Matrix, the name is A and the dimensions are both 2 
3) Press [ENTER] twice 
4) Input the values that are above in the data matrix editor

To calculate the inverse:

1) Press [HOME] 
2) Input a^-1 and press [ENTER]

Please see the TI-89 family, TI-92 family, and Voyage 200 guidebooks for additional information.