   Chapter 11.3, Problem 31E ### Algebra and Trigonometry (MindTap ...

4th Edition
James Stewart + 2 others
ISBN: 9781305071742

#### Solutions

Chapter
Section ### Algebra and Trigonometry (MindTap ...

4th Edition
James Stewart + 2 others
ISBN: 9781305071742
Textbook Problem

# SKILLS 2 7 − 3 4 Finding the Inverse of a Matrix Use a graphing calculator to find the inverse of the matrix, if it exists. (On a TI-83, use the Frac command to obtain the answer in fractions.) [ 1 7 3 0 2 1 0 0 3 ]

To determine

To find:

The inverse of the matrix, if it exists.

Explanation

Given:

The matrix is .

Calculation:

Press the Matrix key and right arrow to Edit on the screen.

Press Enter key to type the matrix in the calculator.

First, type the dimensions as 3×3,

Now, type the elements of the matrix as .

Press Quit key to save the matrix.

Press the Matrix key and go to Math by hitting the right arrow and then press 1 and Enter to find the determinant of this matrix.

Figure (1)

As determinant in non-zero, inverse exists.

Press the Matrix key and then press 1 and Enter to obtain this saved matrix and then press the x1 key to find the inverse of this matrix

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