HP 39g+ Graphing Calculator Guide de l'utilisateur télécharger pdf (Page 181)

Matrices 13-3

To create a matrix

in the Matrix

Catalog

1. Press MATRIX to open the Matrix Catalog. The

Matrix catalog lists the 10 available matrix variables,

M0 to M9.

2. Highlight the matrix variable name you want to use

and press .

3. Select the type of matrix to create.

– For a vector (one-dimensional array),

select Real vector or Complex vector.

Certain operations (+, –, CROSS) do not

recognize a one-dimensional matrix as a vector,

so this selection is important.

– For a matrix (two-dimensional array),

select Real matrix or Complex matrix.

4. For each element in the matrix, type a number or an

expression, and press . (The expression may

not contain symbolic variable names.)

For complex numbers, enter each number in

complex form; that is, (a, b), where a is the real part

and b is the imaginary part. You must include the

parentheses and the comma.

5. Use the cursor keys to move to a different row or

column. You can change the direction of the highlight

bar by pressing . The menu key toggles

between the following three options:

– specifies that the cursor moves to the cell

below the current cell when you press .

– specifies that the cursor moves to the cell to

the right of the current cell when you press

– specifies that the cursor stays in the current

cell when you press .

6. When done, press

MATRIX to see the Matrix

catalog, or press to return to HOME. The

matrix entries are automatically stored.

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HP 39g+ Graphing Calculator Guide de l'utilisateur Page 181