HP 39g+ Graphing Calculator Guide de l'utilisateur télécharger pdf (Page 179)

Matrices 13-1

Matrices

Introduction

You can perform matrix calculations in HOME and in

programs. The matrix and each row of a matrix appear

in brackets, and the elements and rows are separated by

commas. For example, the following matrix:

is displayed in the history as:

[[1,2,3],[4,5,6]]

(If the Decimal Mark mode is set to Comma, then separate

each element and each row with a period.)

You can enter matrices directly in the command line, or

create them in the matrix editor.

Vectors Vectors are one-dimensional arrays. They are composed

of just one row. A vector is represented with single

brackets; for example, [1,2,3]. A vector can be a real

number vector or a complex number vector, for example

[(1,2), (7,3)].

Matrices Matrices are two-dimensional arrays. They are composed

of more than one row and more than one column.

Two-dimensional matrices are represented with nested

brackets; for example, [[1,2,3],[4,5,6]]. You can create

complex matrices, for example, [[(1,2), (3,4)], [(4,5),

(6,7)]].

Matrix Variables There are ten matrix variables available, named M0 to

M9. You can use them in calculations in HOME or in a

program. You can retrieve the matrix names from the

VARS menu, or just type their names from the keyboard.

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HP 39g+ Graphing Calculator Guide de l'utilisateur Page 179