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Working with Matrices |

The most basic way to create a matrix is to
define a matrix literal, either numeric or
character, by entering the matrix elements.
A matrix literal can be a single element (called a *scalar*),
a single row of data (called a *row vector*),
a single column of data (called a *column vector*),
or a rectangular array of data (called a *matrix*).
The *dimension* of a matrix is
given by its number of rows and columns.
An *n* ×*m* matrix has *n* rows and *m* columns.

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