<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2//EN">    <!--	This document was created with HomeSite v3.0  	DATE DE CREATION: 4/08/97  	DERNIERE MODIFICATION: 3/08/98  	PAR: Normand Brousseau -->    <HTML>    <HEAD>  	<TITLE>Maple&nbsp;V  Polytechnique -- Matrix</TITLE>  	<META NAME="Author" CONTENT="Normand Brousseau">  	<META NAME="Classification" CONTENT="Science page">  	<META  NAME="Keywords" CONTENT="Maple&nbsp;V, MapleV, Sciences, Mathmatiques, Mathmatiques appliques, Calculs symboliques, quations diffrentielles, Logiciels mathmatiques, Mathematics, Applied mathematics, Symbolic calculations, Differential equations, Mathematical software">  	<META NAME="Description" CONTENT="Site francophone traitant de l'utilisation de Maple&nbsp;V en quations diffrentielles.">  </HEAD>    <BODY BACKGROUND="../../images/home_defbck.jpg">    <CENTER><H1>Matrix</H1></CENTER>    <BASEFONT SIZE=3>    <CENTER><H2><FONT FACE="Symbol">&gt;</FONT> matrix(m,n,[a11,...,a1n,a21,...,a2n,...,am1,...,amn]);</H2></CENTER>    Permet de crer une matrice de dimension <B><I>n</I>X<I>m</I></B> o <B><I>m</I></B> et <B><I>n</I></B> sont des entiers strictement positifs.<BR><BR>    <H3>Exemple</H3>  <CENTER>  <TABLE BGCOLOR="#99E6AB"><TR>  	<TD WIDTH=400>  		<FONT SIZE="+1">  		<FONT FACE="Symbol">&gt;</FONT> with(<A HREF="../liblinalg.html">linalg</A>):<BR>  		Warning: new definition for norm<BR>  		Warning: new definition for <A HREF="trace.html">trace</A><BR><BR>  		<FONT FACE="Symbol">&gt;</FONT> matrix(2,3,[a,b,c,d,e,f]);  		<CENTER><TABLE><TR>  			<TD ALIGN="Center" VALIGN="Middle"><FONT FACE="Symbol" SIZE="+1"><BR></FONT></TD>  			<TD ALIGN="Center" VALIGN="Middle"><TABLE><TR>  				<TD ALIGN="Center" VALIGN="Middle"><I>a</I></TD>  				<TD ALIGN="Center" VALIGN="Middle"><I>b</I></TD>  				<TD ALIGN="Center" VALIGN="Middle"><I>c</I></TD>  			</TR><TR>  				<TD ALIGN="Center" VALIGN="Middle"><I>d</I></TD>  				<TD ALIGN="Center" VALIGN="Middle"><I>e</I></TD>  				<TD ALIGN="Center" VALIGN="Middle"><I>f</I></TD>  			</TR></TABLE></TD>  			<TD ALIGN="Center" VALIGN="Middle"><FONT FACE="Symbol" SIZE="+1"><BR></FONT></TD>  		</TR></TABLE></CENTER>  		</FONT>  	</TD>  </TR></TABLE>  </CENTER><BR>    On peut accder aux lments de la matrice en utilisant les [&nbsp;].    <H3>Exemple</H3>  <CENTER>  <TABLE BGCOLOR="#99E6AB"><TR>  	<TD WIDTH=400>  		<FONT SIZE="+1">  		<FONT FACE="Symbol">&gt;</FONT> with(<A HREF="../liblinalg.html">linalg</A>):<BR>  		Warning: new definition for norm<BR>  		Warning: new definition for <A HREF="trace.html">trace</A><BR><BR>  		<FONT FACE="Symbol">&gt;</FONT> M := matrix(2,2,[a,b,c,d]);  		<CENTER><TABLE><TR>  			<TD ALIGN="Center" VALIGN="Middle"><FONT SIZE="+1"><I>M</I> :=</FONT></TD>  			<TD ALIGN="Center" VALIGN="Middle"><FONT FACE="Symbol" SIZE="+1"><BR></FONT></TD>  			<TD ALIGN="Center" VALIGN="Middle"><TABLE><TR>  				<TD ALIGN="Center" VALIGN="Middle"><I>a</I></TD>  				<TD ALIGN="Center" VALIGN="Middle"><I>b</I></TD>  			</TR><TR>  				<TD ALIGN="Center" VALIGN="Middle"><I>c</I></TD>  				<TD ALIGN="Center" VALIGN="Middle"><I>d</I></TD>  			</TR></TABLE></TD>  			<TD ALIGN="Center" VALIGN="Middle"><FONT FACE="Symbol" SIZE="+1"><BR></FONT></TD>  		</TR></TABLE></CENTER><BR>  		<FONT FACE="Symbol">&gt;</FONT> M[2,2];  		<CENTER><I>d</I></CENTER>  		</FONT>  	</TD>  </TR></TABLE>  </CENTER>    </BODY>  </HTML>  
