denominator of really complicated expression

Thanks Richard, it seems like it is going to work with what you suggested.

Ryan

On 11/21/05, Richard Fateman  wrote:
> put at the front:
> showtime:all$
> ratmx:true$
> nolabels:true$
> abeam:rat(abeam)$
> ratvars(abeam, cbeam, .....)  ... list all the variables
>
> ...
> ratdenom(bode0);
>
>
> exclude computing stuff you don't need to compute bode0.
>
> don't use expand.  all values including abeam  will be expanded
> automatically, and the denominator
>
> change all the ; to $
>
> Ryan Krauss wrote:
> > I have a really complicated expression I need to find the denominator
> > of.  When I save the expression to file the file is 300kb.  The
> > expression has some smaller fractions sprinkled though out, so I need
> > to expand it before I can call denom.  (denom on the un-expanded
> > expression just gives 1).  When I call either expand or radcan on the
> > expression, it runs for several minutes, maxima takes up 300-400 megs
> > of memory and then stops with the message:
> > (%i104) bob:expand(bode0);
> >
> > Maxima encountered a Lisp error:
> >
> >  Error in CATCH [or a callee]: The storage for CONS is exhausted.
> > Currently, 66689 pages are allocated.
> > Use ALLOCATE to expand the space.
> >
> > Automatically continuing.
> > To reenable the Lisp debugger set *debugger-hook* to nil.
> > (%i105)
> >
> > Does anyone have any suggestions for expanding or finding the
> > denominator of a really long expression in a way that doesn't have
> > this error?
> >
> > The attached batch file generates the expression.  The expression I
> > need to simplify is called bode0.
> >
> > Thanks,
> >
> > Ryan
>
>