SYSTEMS OF EQUATIONS Gauss-Jordan Reduction (Page 6 of 7)

As another example of Gauss-Jordan reduction, let's solve the system of equations
                                   4x-3y+3z = 2; 5x+y-4z = 1; 9x-2y-z = 3 having augmented matrix matrix{row1: 4 -3 3 2; row2: 5 1 -4 1; row3: 9 -2 -1 3}.

Enter the augmented matrix into the calculator using the matrix editor. We will use matrix A again. The size of the augmented matrix is 3 rows by 4 columns. (We deleted any previous matrices first.)

 MATRX key. [EDIT] 1: menu selection.

 3 ENTER key. 4 ENTER key.
 4 ENTER key. Negation key. 3 ENTER key. 3 ENTER key. 2 ENTER key.
 5 ENTER key. 1 ENTER key. Negation key. 4 ENTER key. 1 ENTER key.
 9 ENTER key. Negation key. 2 ENTER key. Negation key. 1 ENTER key. 3 ENTER key.

 Calculator screen image.
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