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%TCIDATA{<META NAME="Title" CONTENT="Matrix">}
%TCIDATA{Created=Mon Aug 19 14:52:24 1996}
%TCIDATA{LastRevised=Thu Feb 13 22:38:04 1997}
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\begin{document}


\section{Matrix}

A matrix is a rectangular array:

\[
\begin{array}{lll}
a & b & c \\ 
d & e & f
\end{array}
\]

The \hyperref{cells}{}{}{Glossary.tex#cell} of a matrix expand to encompass
their contents. You can toggle on and off the outline of matrix cells with
the Helper Lines command on the \hyperref{View menu}{}{}{%
View_menu_commands.tex}. The outlines do not print.

\subsubsection{$\blacktriangleright $\quad To enter a matrix}

\begin{enumerate}
\item  Click\FRAME{itbpF}{22.4375pt}{21.0625pt}{2pt}{}{}{matrix.wmf}{\special%
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"XNPEU";}}, or from the Insert menu, choose Matrix .

\item  Use the Matrix dialog box to set the dimensions and the vertical
alignment of the matrix, and the alignment of the columns within the matrix.

\item  Choose OK.

The program places the insertion point in the input box in the top left cell
of the matrix.

\item  Enter the contents of the cell.

\item  Press Tab to move to the next cell.

\item  Press the spacebar or the right arrow to leave the matrix.
\end{enumerate}

\subsubsection{$\blacktriangleright $\quad To enter a 2x2 matrix}

\begin{itemize}
\item  Press Ctrl+a.
\end{itemize}

\subsubsection{$\blacktriangleright $\quad To enclose a matrix in brackets}

\begin{enumerate}
\item  Select the matrix.

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"XNPEU";}}, or from the Insert menu, choose Brackets.

\item  Choose the brackets you want.

\item  Choose OK.\medskip
\end{enumerate}

\subsection{$\ $Related topics}

\begin{itemize}
\item  \hyperref{Aligning matrix columns}{}{}{Align_matrix_columns.tex}

\item  \hyperref{Case expressions}{}{}{Case_expressions.tex}

\item  \hyperref{Editing a matrix}{}{}{Editing_matrix.tex}

\item  \hyperref{Editing a vector}{}{}{Editing_vector.tex}

\item  \hyperref{Mathematical objects}{}{}{Math_objects.tex}

\item  \hyperref{Setting a matrix baseline}{}{}{Set_matrix_baseline.tex}

\item  \hyperref{Tables}{}{}{Tables.tex}

\item  \hyperref{Vectors}{}{}{Vectors.tex}
\end{itemize}

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