Texas Instruments TI-82 STATS

10–12 Matrices
82EA17~1.DOC TI-83 international English Bob Fedorisko Revised: 10/26/05 1:31 PM Printed: 10/27/05 2:47
PM Page 12 of 16
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NAMES MAT
H
EDIT
1: det( Calculates the determinant.
2:
T
Transposes the matrix.
3: dim( Returns the matrix dimensions.
4: Fill( Fills all elements with a constant.
5: identity( Returns the identity matrix.
6: randM( Returns a random matrix.
7: augment( Appends two matrices.
8: Matr4list( Stores a matrix to a list.
9: List4matr( Stores a list to a matrix.
0: cumSum( Returns the cumulative sums of a matrix.
A: ref( Returns the row-echelon form of a matrix.
B: rref( Returns the reduced row-echelon form.
C: rowSwap( Swaps two rows of a matrix.
D: row+( Adds two rows; stores in the second row.
E: ärow( Multiplies the row by a number.
F: ärow+( Multiplies the row, adds to the second row.
det( (determinant) returns the determinant (a real number) of a
square matrix.
det(matrix)
T
(transpose) returns a matrix in which each element (row,
column) is swapped with the corresponding element (column,
row) of matrix.
matrix
T
dim( (dimension) returns a list containing the dimensions
(
{rows columns}) of matrix.
dim(matrix)
Note: dim(matrix)!
!!
!Ln:Ln(1) returns the number of rows.
dim(matrix)!
!!
!Ln:Ln(2) returns the number of columns.
Using the MATRX MATH Operations
MATRX MATH
Menu
det(
T
(Transpose)
Accessing Matrix
Dimensions with
dim(