extracting common terms
- Subject: extracting common terms
- From: Barton Willis
- Date: Sat, 7 Mar 2009 20:56:57 -0600
Maybe you need to append two additional arguments to facsum; try
facsum(diff(exp,e),diff(v(t,e),e), diff(u(t,e),e), diff(S(t,e),e));
Barton
-----maxima-bounces at math.utexas.edu wrote: -----
>I?am?trying?to?solve?a?system?of?functional?equations?using
>perturbation?methods.??I?have?equations?the?left?side?of?which?look
>like,?for?example,
>
>exp:delta*S(t,e)+M*beta*S(t,e)*v(t,e)^alpha*u(t,e)^(1-alpha)+M*(1-beta)*S
>(t,e)*v(t,e)^alpha*v(t,e)^-alpha;
>
>I?would?like?to?bring?diff(exp,e)?to?the?form
>
>diff(v(t,e),e)*A?+?diff(u(t,e),e)*B?+?diff(S(t,e),e)*C
>
>and?get?a?list?[A,B,C].??I?tried?reading?the?archives,?and?found
>facsum,?but
>
>facsum(diff(exp,e),diff(v(t,e),e));
>
>does?not?quite?do?what?I?want:?fractions?remain?in?the?whole?thing?(I
>want?something?"flat"),?and?I?don't?know?how?to?extract?the
>expressions?that?correspond?to?A,B,C?above.