Thanks Barton, the function worked perfectly. Laurent Couraud also
answered this question to me, but he suggested using facsum, which also
worked.
By the way, do you know any good pdf book about maxima, with some good
tutorials and examples?
thanks again!
Felipe
Barton Willis wrote:
> -----maxima-bounces at math.utexas.edu wrote: -----
>
>
>> To: Maxima Mailing List <maxima at math.utexas.edu>
>> From: Felipe Augusto Sviaghin Ferri <felipe.ferri at gmail.com>
>> Sent by: maxima-bounces at math.utexas.edu
>> Date: 09/03/2007 06:53PM
>> Subject: Doubt about Factoring
>>
>> Hello,
>>
>> I am having the following problem in Maxima. I have an expression
>> which has a format like this:
>> f:a*b+b*c+a*c;
>> In fact, my expression is waaaay larger than this, this is only to
>> exemplify.
>> I would like to tell maxima that "c" is an important variable and i
>> want it to be "factored out" of the expression, like this:
>> f:a*b+(a+b)*c;
>> How can I accomplish this?
>>
>> Thanks for your help!
>>
>
>
> Try this:
>
> (%i1) rat(a*b+b*c+a*c,c);
> (%o1) (b+a)*c+a*b
>
> Also, at a command line type "? rat". This will show the user
> documentation for the function 'rat'. You also might like to
> read about the function 'facout' and 'factorsum'.
>
> BW
>
>
>
>