Matrices 10–3
82EA17~1.DOC TI-83 international English Bob Fedorisko Revised: 10/26/05 1:31 PM Printed: 10/27/05 2:47
PM Page 3 of 16
A matrix is a two-dimensional array. You can display, define, or
edit a matrix in the matrix editor. The TI-82 STATS has 10
matrix variables,
[A] through [J]. You can define a matrix
directly in an expression. A matrix, depending on available
memory, may have up to 99 rows or columns. You can store
only real numbers in TI-82 STATS matrices.
Before you can define or display a matrix in the editor, you first
must select the matrix name. To do so, follow these steps.
1. Press | to display the
MATRX EDIT menu. The
dimensions of any previously defined matrices are displayed.
2. Select the matrix you want to define. The MATRX EDIT
screen is displayed.
The dimensions of the matrix (row × column) are displayed on
the top line. The dimensions of a new matrix are
1 ×1. You must
accept or change the dimensions each time you edit a matrix.
When you select a matrix to define, the cursor highlights the
row dimension.
• To accept the row dimension, press Í.
• To change the row dimension, enter the number of rows (up
to
99), and then press Í.
The cursor moves to the column dimension, which you must
accept or change the same way you accepted or changed the row
dimension. When you press Í, the rectangular cursor
moves to the first matrix element.
Defining a Matrix
What Is a Matrix?
Selecting a
Matrix
Accepting or
Changing Matrix
Dimensions
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