Before we can operate on a matrix, we must first enter the matrix into the TI84 calculator. Enter the following matrix into the calculator as matrix [B].
Press the matrix button or combination of buttons to get the matrix menu. Right arrow twice to highlight the EDIT menu. Select [B] and then press ENTER .
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Next we enter the dimension of the matrix which is 2 X 4. Press 2 ENTER. The 2 appears and the cursor advances to the next position. Now press 4 ENTER. The size in now determined. We enter the numbers across the rows beginning with row one. The bottom of the screen lists the entry's position in the matrix.
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Now press 5 ENTER 14 ENTER 7 ENTER 1 ENTER. This completes the first row. Press 2 ENTER 3 ENTER 10 ENTER 4 ENTER.
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To exit the matrix editor, press 2nd MODE [QUIT]. That returns you to the home screen.
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