Texas Instruments TI-86 - The MATRX OPS (Operations) Menu

184
Chapter 13: Matrices
13MATRX.DOC TI-86, Chap 13, US English Bob Fedorisko Revised: 02/13/01 2:32 PM Printed: 02/13/01 3:03 PM Page 184 of 1013MATRX.DOC TI-86, Chap 13, US English Bob Fedorisko Revised: 02/13/01 2:32 PM Printed: 02/13/01 3:03 PM Page 184 of 10
The MATRX OPS (Operations) Menu
- ‰ )
NAMES EDIT MATH OPS CPLX
dim Fill ident ref rref
4
aug rSwap rAdd multR mRAdd
4
randM
dim
matrix
Returns the dimensions of
matrix
as a list
{
rows columns
}
{
rows
,
columns
}
¶
dim
matrixName
Creates a new
matrixName
of the specified dimensions; each
element is 0
{
rows
,
columns
}
¶
dim
matrixName
Redimensions
matrixName
to the specified dimensions
Fill(
number
,
matrixName
)
Stores a real or complex
number
to each
matrixName
element
ident
dimension
Returns the square identity matrix of
dimension
×
dimension
ref
matrix
Returns the row-echelon form of
matrix
rref
matrix
Returns the reduced row-echelon form of
matrix
aug(
matrixA
,
matrixB
)
Concatenates
matrixA
and
matrixB
aug(
matrix
,
vector
)
Concatenates
matrix
and
vector
rSwap(
matrix
,
rowA
,
rowB
)
Returns a matrix after swapping
rowA
and
rowB
of
matrix
rAdd(
matrix
,
rowA
,
rowB
)
Returns
matrix
with (
rowA
+
rowB
) of
matrix
stored in
rowB
multR(
number
,
matrix
,
row
)
Returns
matrix
with (
row
¹
number
) stored in
row
mRAdd(
number
,
matrix
,
rowA
,
rowB
)
Returns
matrix
with ((
rowA
¹
number
)+
rowB
) stored in
rowB
randM(
rows
,
columns
)
Creates a matrix of specified dimensions with random elements
Press
X
to enter the
¶
symbol after the close brace.
When you use
aug( , the
number of rows in
matrixA
must equal the number of
rows in
matrixB
or the
number of elements in
vector
.
Elements of matrices created
with
randM( are integers
‚L
9
and

9.