
<A NAME=IFACTOR>

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



<B>IFACTOR</B> _ _ _  _ _ _  _ _ _  _ _ _ <B>switch</B><P>
<P>
 
 <P>
<P>
When the <em>ifactor</em> switch is on, any integer terms appearing as a result 

of the 
<A HREF=r37_0151.html>factorize</A> command are factored themselves into primes.
 Default 
is <em>off</em>. If the argument of <em>factorize</em> is an integer, 
<em>ifactor</em> has no effect, since the integer is always factored. 
<P>
<P>
 <P> <H3> 
examples: </H3>
<P><PRE><TT>
factorize(4*x**2 + 28*x + 48); 

  {{4,1},{X + 4,1},{X + 3,1}} 


factorize(22587); 

  {{3,1},{7529,1}} 


on ifactor; 

factorize(4*x**2 + 28*x + 48); 

  {{2,2},{X + 4,1},{X + 3,1}} 


factorize(22587); 

  {{3,1},{7529,1}} 

</TT></PRE><P>Constant terms that appear within nonconstant 
polynomial factors are not factored. 
<P>
<P>
The <em>ifactor</em> switch affects only factoring done specifically 
with 
<A HREF=r37_0151.html>factorize</A>, not on factoring done automatically when th
e 

<A HREF=r37_0287.html>factor</A> switch is on. 
<P>
<P>
<P>
