Chapter 10: Matrices; Systems Of Linear Equations - Texas Instruments TI-84 Plus Manual Book

Chapter 10: Chapter 10: Chapter 10: Chapter 10:
Matrices Matrices
Matrices Matrices
Getting Started: Systems of Linear Equations Getting Started: Systems of Linear Equations
Getting Started: Systems of Linear Equations Getting Started: Systems of Linear Equations
Getting Started is a fast-paced introduction. Read the chapter for details.
Find the solution of X + 2Y + 3Z = 3 and 2X + 3Y + 4Z = 3. On the TI-84 Plus, you can
solve a system of linear equations by entering the coefficients as elements in a matrix,
and then using
rref(
1. Press y . Press ~ ~ to display the
menu. Press
MATRX EDIT
Í
2. Press
2
rectangular cursor indicates the current element.
Ellipses ( ) indicate additional columns beyond
...
the screen.
Í to enter the first element. The
3. Press
1
rectangular cursor moves to the second column of
the first row.

Chapter 10: Matrices

to obtain the reduced row-echelon form.
to select
1
Í to define a 2×4 matrix. The
4
.
1: [A]
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