hp40g+.book Page 2 Friday, December 9, 2005 1:03 AM

Creating and storing matrices

Matrix Catalog keys

To create a matrix in the Matrix Catalog

You can create, edit, delete, send, and receive matrices in the Matrix catalog.

To open the Matrix

catalog, press MATRIX.

You can also create and store matrices—named or unnamed—-in HOME. For example, the command:

POLYROOT([1,0,–1,0])XM1

stores the root of the complex vector of length 3 into the

M1 variable. M1 now contains the three roots of x3 – x = 0

The table below lists the operations of the menu keys in

the Matrix Catalog, as well as the use of Delete ( )

and Clear ( CLEAR).

Key

Meaning

 

 

 

Opens the highlighted matrix for

 

editing.

 

Prompts for a matrix type, then

 

opens an empty matrix with the

 

highlighted name.

 

Transmits the highlighted matrix to

 

another HP 40gs or a disk drive.

 

See.

 

Receives a matrix from another

 

HP 40gs or a disk drive. See .

 

Clears the highlighted matrix.

CLEAR

Clears all matrices.

or

Moves to the end or the beginning

 

of the catalog.

 

 

1.Press MATRIX to open the Matrix Catalog. The Matrix catalog lists the 10 available matrix variables, M0 to M9.

18-2

 

 

Matrices