MATLAB POLYSPACE RELEASE NOTES Manual do Utilizador descarregar pdf (Página 42)

2 Matrices and Arra ys

More About Matrices and Arrays

In this section.. .

“Linear Algebra” on page 2-20

“Arrays” on page 2-24

“Multivariate D ata” on page 2-26

“Scalar Expansion” on page 2-27

“Logical Subscripting” on page 2-27

“The find Function” on page 2-28

Linear Algebra

Informally, the terms matrix and array are often used interchangeably. More

precisely, a matrix is a two-dimensional numeric a rray that represents a

linear transformation. The mathematical operations defined on matrices are

the subject of linear algebra.

Dürer’s magic square

A=[16 3 2 13

51011 8

96712

41514 1]

provides se veral examp les that give a tas te of MATLAB matri x operations.

You h ave already seen the matrix transpose,

A'. Adding a matrix to its

transpose produces a sym m etric matrix:

A+A'

ans =

32 8 11 17

8201723

11 17 14 26

17 23 26 2

2-20

1 2 ... 37 38 39 40 41 42 43 44 45 46 47 ... 239 240

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MATLAB POLYSPACE RELEASE NOTES Manual do Utilizador Página 42