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<A NAME=taylororiginal>

<TITLE>taylororiginal</TITLE></A>
<b><a href=r37_idx.html>INDEX</a></b><p><p>



<B>TAYLORORIGINAL</B> _ _ _  _ _ _  _ _ _  _ _ _ <B>operator</B><P>
<P>
 
 Recovers the original expression (the one that was expanded) from 
 the Taylor kernel that is given as its argument. 
<P>
<P>
 <P> <H3> 
syntax: </H3>
<em>taylororiginal</em>(&lt;expression&gt;) or 
 <em>taylororiginal</em> &lt;simple_expression&gt; 
 <P>
<P>
<P>
 <P> <H3> 
examples: </H3>
<P><PRE><TT>
    hugo := taylor(exp(x),x,0,2); 

                  1  2      3
  HUGO := 1 + X + -*X  + O(X )
                  2


    taylororiginal hugo; 

  ***** Taylor kernel doesn't have an original part in TAYLORORIGINAL


    on taylorkeeporiginal; 

    hugo := taylor(exp(x),x,0,2); 

                  1  2      3
  HUGO := 1 + X + -*X  + O(X )
                  2


    taylororiginal hugo; 

   X
  E   

</TT></PRE><P>An error is signalled if the argument is not a Taylor kernel or if
 
 the original expression was not kept, i.e. if 
 
<A HREF=r37_0539.html>taylorkeeporiginal</A> was set <em>off</em> during expansi
on. 
 <P>
<P>
<P>