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Using the Action Menu
u
QR
Function: Returns the QR decomposition of a square matrix.
Syntax: QR (Mat, qVariableMem, rVariableMem [
)
]
Example: To obtain the QR decomposition of the matrix [[1, 2] [3, 4]]
• The unitary matrix is assigned to variable Q, while the upper triangular matrix is
assigned to variable R.
Menu Item: [Action][Matrix-Calculation][QR]
To display the unitary matrix
Menu Item: [VAR][CAP][Q][EXE]
To display the upper triangular matrix
Menu Item: [VAR][CAP][R][EXE]
u
swap
Function: Swaps two rows of a matrix.
Syntax: swap (Mat, row number-1, row number-2 [
)
]
Example: To swap row 1 with row 2 of the matrix [[1, 2] [3, 4]]
Menu Item: [Action][Matrix-Calculation][swap]
u
mRow
Function: Multiplies the elements of a specific row in a matrix by a specific expression.
Syntax: mRow (Exp, Mat, row number [
)
]
Example: To multiply row 1 of the matrix [[1, 2] [3, 4]] by
x
Menu Item: [Action][Matrix-Calculation][mRow]