SYSTEMS OF EQUATIONS Solving Using The Inverse Matrix (Page 2 of 4)

Enter matrix A as the TI-83/84 matrix [A] using the matrix editor. First specify the size, which is 3 rows by 3 columns. Then type in each entry of the matrix (one row at a time) and press ENTER. The cursor will automatically advance to the next position. (We have deleted any previously created matrices.)

 MATRX key. Left arrow key. 1: menu selection. ** Calculator screen image.
 3 ENTER key. 3 ENTER key. (Size)
 2 ENTER key. Negation key. 1 ENTER key. 2 ENTER key. (Row 1)
 1 ENTER key. 2 ENTER key. Negation key. 3 ENTER key. (Row 2)
 3 ENTER key. 11 ENTER key. Negation key. 12 ENTER key. (Row 3)		 Calculator screen image.
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