Please

print out

important

pages.

 

The following demonstrates some elementary row operations on the TI 83.

Many of these operation are available on the TI 82.

MATRIX,  EDIT, 1 Enter the data, hitting
ENTER after each
2nd QUIT, MATRIX,  1,
ENTER
MATRIX,  MATH , F
4 times (matrix A)row 1
added to row 3   ENTER
Row addition: MATRIX,
MATH , D

Row 3 is added to row 2

MATRIX, MATH, A

Reduced echelon form
for Gaussian reduction

MATRIX , MATH, B

reduced echelon form
for Gauss Jordan

MATRIX , MATH, 3
Gives dimension of Matrix A

When using the calculator for row operations, make sure that you store the new matrix,STO , MATRIX , A after each operation. However, it is a good idea to actually store itas MATRIX B and leave matrix A as the original.  
After each step, check the screen to make sure you did what you intended then STO , MATRIX , B

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©Joan Bookbinder 1998 1999 All rights reserved