Syntax: sumSeq (List-1[, List-2] [,variable] [ ) ]

• “x” is the default when you omit “[,variable]”.

Example: To determine the sum of a polynomial for a sequence expressed by the list {3, 5, 7, 9}

Using the Matrix-Create Submenu

The [Matrix][Create] submenu contains commands related to creation of matrices.

utrn [Action][Matrix][Create][trn]

Function: Returns a transposed matrix.

Syntax: trn (Mat [ ) ]

Example: To transpose the matrix [[1, 2] [3, 4]]

uaugment [Action][Matrix][Create][augment]

Function: Returns a matrix that combines two other matrices.

Syntax: augment (Mat-1, Mat-2 [ ) ]

Example: To combine the two matrices [[1, 2] [3, 4]] and [[5, 6] [7, 8]]

uident [Action][Matrix][Create][ident]

Function: Creates an identity matrix.

Syntax: ident (natural number [ ) ]

Example: To create a 2 ⋅ 2 identity matrix

ufill [Action][Matrix][Create][fill]

Function: Creates a matrix with a specific number of rows and columns, or replaces the elements of a matrix with a specific expression.

Syntax: fill (Exp, number of rows, number of columns [ ) ] fill (Exp, Mat [ ) ]

Example: To create a 2 ⋅ 3 matrix, all whose elements are 2

usubMat [Action][Matrix][Create][subMat]

Function: Extracts a specific section of a matrix into a new matrix.

Syntax: subMat (Mat [,start row] [,start column] [,end row] [,end column] [ ) ]

•“1” is the default when you omit “[, start row]” and “[, start column]”.

•The last row number is the default when you omit “[, end row]”.

•The last column number is the default when you omit “[, end column]”.

Example: To extract the section from row 2, column 2, to row 3, column 3 from the matrix [[1, 4, 7] [2, 5, 8] [3, 6, 9]]

udiag [Action][Matrix][Create][diag]

Function: Returns a one-row matrix containing the elements from the main diagonal of a square matrix.

Syntax: diag (Mat[ ) ]

Example: To extract the diagonal elements of the matrix [[1, 2] [3, 4]]

Chapter 2: Main Application

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