HP Prime Graphing NW280AAABA manual Creating and storing matrices, POLYROOT1,0,-1,0M1

Creating and storing matrices

The Matrix Catalog contains the reserved matrix variables M0-M9, as well as any matrix variables you have created in Home or CAS views (or from a program if they are global).

Once you select a matrix name, you can create, edit, and delete matrices in the Matrix Editor. You can also send a matrix to another HP Prime.

To open the Matrix Catalog, pressSt(Matrix).

In the Matrix Catalog, the size of a matrix is shown beside the matrix name. (An empty matrix is shown as 1*1.) The number of elements in it is shown beside a vector.

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

POLYROOT([1,0,–1,0])M1

stores the roots of the complex vector of length 3 into the variable M1. M1 will thus contain the three roots of

x3 – x = 0 : 0, 1 and –1.

Matrix Catalog: The buttons and keys available in the Matrix Catalog are: buttons and keys

Button or Key Purpose

Opens the highlighted matrix for editing. or C Deletes the content sof the selected matrix.

Changes the selected matrix into a one- dimensional vector.

Transmits the highlighted matrix to another

HP Prime.

SJ(Clear Clears the contents of the reserved matrix

)variables M0-M9and deletes any user- named matrices.

464 Matrices