Operation Manual

10-8 Matrices
8210MTRX.DOC TI-82, Chapter 10, English Bob Fedorisko Revised: 02/09/01 9:18 AM Printed:
02/09/01 12:38 PM Page 8 of 14
About Matrices
On the Home screen or in a program, you can use, enter, store, and display
matrices.
Using a Matrix in an Expression
To use a matrix in an expression, you may:
¦
Copy the name from the
MATRIX NAMES
menu.
¦
Recall the contents of the matrix into the expression with
y
[
RCL
]
(Chapter 1).
¦
Enter the matrix directly (see below).
Entering a Matrix in an Expression
You can enter, edit, and store a matrix in the
MATRIX
editor. You also can
enter a matrix directly in an expression.
1. Press
y
ã
ã
ä
to indicate the beginning of the matrix.
2. Press
y
ã
ã
ä
to indicate the beginning of a row.
3. Enter a value (which can be an expression) for each element in the row,
separated by commas.
4. Press
y
ã
ä
ä
to indicate the end of a row.
5. Repeat steps 2 through 4 to enter all of the rows.
6. Press
y
ã
ä
ä
to indicate the end of the matrix.
Note: The closing
]]
is not necessary at the end of an expression or
preceding
!
.
[[
element
1,1
,
. . .
,
element
1,n
]
. . .
[
element
m
,
. . .
,
element
m,n
]]
The expression is evaluated when the entry is executed. Commas are required
on entry to separate elements, but are not displayed on output.