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Using the Action Menu

uQR

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]

uswap

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]

umRow

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]

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