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<A NAME=DIFFERENCE>

<TITLE>DIFFERENCE</TITLE></A>
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<B>DIFFERENCE</B> _ _ _  _ _ _  _ _ _  _ _ _ <B>operator</B><P>
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The <em>difference</em> operator may be used as either an infix or prefix binary
 
subtraction operator. It is identical to <em>-</em> as a binary operator. 
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syntax: </H3>
<em>difference</em>(&lt;expression&gt;,&lt;expression&gt;) or 
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&lt;expression&gt; <em>difference</em> &lt;expression&gt; 
 {<em>difference</em> &lt;expression&gt;}* 
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&lt;expression&gt; can be a number or any other valid REDUCE expression. Matrix 

expressions are allowed if they are of the same dimensions. 
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examples: </H3>
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difference(10,4); 

  6 



15 difference 5 difference 2; 

  8 



a difference b; 

  A - B

</TT></PRE><P>The <em>difference</em> operator is left associative, as shown in 
the second 
example above. 
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