#

Matrices

Let
,
be natural numbers. An
matrix is a rectangular scheme of numbers, which are arranged in
rows and
columns:

The numbers
, where
, are called elements or entries of the matrix. In this notation,
is called the row index and
the column index. In general, this matrix is briefly referred to as
, or alternatively as
. Essentially, MATLAB only knows one calculation unit, namely an
matrix. In MATLAB, a scalar is interpreted as a
matrix.

**Subsections**

Esteur
2010-03-22