Texas Instruments TI-83 - Page 179

Matrices 10-13
8310MTRX.DOC TI-83 international English Bob Fedorisko Revised: 02/19/01 12:35 PM Printed: 02/19/01 1:36
PM Page 13 of 16
Use dim( with
¿
to create a new
matrixname
of
dimensions
rows
×
columns
with
0 as each element.
{
rows
,
columns
}
!
dim(
matrixname
)
Use dim( with
¿
to redimension an existing
matrixname
to dimensions
rows
×
columns
. The elements
in the old
matrixname
that are within the new dimensions
are not changed. Additional created elements are zeros.
Matrix elements that are outside the new dimensions are
deleted.
{
rows
,
columns
}
!
dim(
matrixname
)
Fill(
stores
value
to every element in
matrixname
.
Fill(
value
,
matrixname
)
identity( returns the identity matrix of
dimension
rows ×
dimension
columns.
identity(
dimension
)
randM(
(create random matrix) returns a
rows
×
columns
random matrix of integers
‚
L
9 and

9. The seed value
stored to the
rand function controls the values (Chapter 2).
randM(
rows
,
columns
)
Creating a Matrix
with dim(
Redimensioning a
Matrix with dim(
Fill(
identity(
randM(