HP 40G Creating and storing matrices

Creating and storing matrices

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

To open the Matrix catalog, press >6+,)7@ MATRIX.

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

Matrix Catalog keys

POLYROOT([1,0,–1,0]) &M1

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

(>6+,)7@CLEAR).

Key	Meaning
(',7_	Opens the highlighted matrix for
	editing.
1(:_	Prompts for a matrix type, then opens
	an empty matrix with the highlighted
	name.
6(1'_	Transmits the highlighted matrix to
	another HP 39G/40G or a disk drive.
	See “Sending and receiving aplets” on
	page 16-5.
5(&9_	Receives a matrix from another
	HP 39G/40G or a disk drive. See
	“Sending and receiving aplets” on
	page 16-5.
>'(/@	Clears the highlighted matrix.
>6+,)7@CLEAR	Clears all matrices.
>6+,)7@*e, or	Moves to the end or the beginning of
*k@	the catalog.

12-2 Matrices