HP 39g Graphing Calculator Guide de l'utilisateur télécharger pdf (Page 173)

Matrices 12-1

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 in MODES is set to Comma, then the

row separators are periods.)

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 173