# [C.15] Matrix Inverse on a graphing calculator

Taught by TheMathDude
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Lesson Summary:

In this lesson, you will learn how to find the inverse of a square matrix using the inverse key on your graphing calculator. However, not all square matrices can be inverted, and the error message "Singular" will indicate that the matrix is undefined, similar to dividing by zero. By following the steps outlined in this lesson, you will be able to easily find the inverse for most matrices and avoid errors.

Lesson Description:

Learn how to find the inverse of a matrix (using inverse key x^-1) on a graphing calculator. Also, learn what the error 'Singular' means.

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• How do you find the inverse of a matrix using a TI graphing calculator?
• What does ERR:INVALID DIM mean when finding an inverse matrix on a TI graphing calculator?
• When can you take the inverse of a matrix?
• What does it mean for a matrix to be Singular?
• What does ERR:SINGULAR MAT mean on a TI graphing calculator when you try to take the inverse of a matrix?
• #### Staff Review

• Currently 4.0/5 Stars.
Finding the inverse of a matrix by hand can be very involved and tedious. Calculators can do this operations very quickly and easily, so this skill is very useful and important. All steps involved in finding the inverse of a matrix are shown and explained very well.