Operation Manual

10-12 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 12 of 14
MATRX MATH Operations
Pressing
 ~
accesses the matrix math operations on the MATRX MATH
menu.
MATRX MATH Menu
NAMES MATH EDIT
1: det
Calculates the determinant.
2:
T
Transposes the matrix.
3: dim
Returns the matrix dimension.
4: Fill(
Fills all elements with a constant.
5: identity
Returns the identity matrix.
6: randM(
Returns a random matrix.
7: augment(
Augments two matrices.
8: rowSwap(
Swaps two rows of a matrix.
9: row+(
Adds two rows, stores in second row.
0:
…
row(
Multiplies row by a number.
A:
…
row+(
Multiplies row, adds to second row.
det
det
(determinant) returns the determinant (a real number) of a square
matrix
.
det
matrix
T
(Transpose)
T
(transpose) returns a matrix in which each element(
row
,
column
) is
swapped with the corresponding element(
column
,
row
) of
matrix
.
matrix
T
Accessing Matrix Dimensions with dim
dim
(dimension) returns a list containing the dimensions (
{
rows columns
}
)
of
matrix
.
dim
matrix
Note:
dim
matrix
!
L
n
:L
n
(1)
returns the number of rows.
dim
matrix
!
L
n
:L
n
(2)
returns the number of columns.