Chapter 8, Problem 82RE

To determine

Inverse of the matrix by using graphic utility.

Answer to Problem 82RE

Inverse of the matrix is;

  $A^{-1}=\left[\begin{array}{l}-2.5\text{ 3 7 -2}\\ \text{-4 4}\text{.5 11 -3}\\ \text{14}\text{.5 -16 -40 12}\\ \text{-1 1 3 -1}\end{array}\right]$

Explanation of Solution

Given:

Matrix is given as ;

  $A=\left[\begin{array}{l}2\text{ 0 3}\\ \text{-1 1 1}\\ \text{2 -2 1}\end{array}\right]$

Now, 2^nd matrix of calculator and after that edit option.

And then by pressing 1 by select option $\left[A\right]$

  

Now, enter the matrix parameter shown in figure below.

  

Now, press 2^nd QUIT

Press 2^nd Matrix of calculator and after that select names option.

And then by pressing 1 by select option $\left[A\right]$

  

Now, press button $x^{-1}$ and then press enter button.

  

Therefore inverse of the matrix is;

  $A^{-1}=\left[\begin{array}{l}-2.5\text{ 3 7 -2}\\ \text{-4 4}\text{.5 11 -3}\\ \text{14}\text{.5 -16 -40 12}\\ \text{-1 1 3 -1}\end{array}\right]$