Alasdair wrote:
>
> Actually, there's one minor problem: the mixed partial derivatives are
> treated as different objects, so I have to do
>
> kxy := eval(D(f(x,z),[x,z]),z=y(x))
> > kyx := eval(D(f(x,z),[z,x]),z=y(x))
> >
> > subst(f2,[kxy=F[xy],kyx=F[xy])
> >
>
> which is clearly going to become prohibitive for larger numbers of
> variables. How can I convince Fricas that D(f(x,z),[x,z]) and
> D(f(x,z),[z,x]) are in fact the same?
I am affraid that ATM substitution is the only way. FriCAS
should automatically do such simplification, I will try to
implement this.
--
Waldek Hebisch
[email protected]
--
You received this message because you are subscribed to the Google Groups
"FriCAS - computer algebra system" group.
To unsubscribe from this group and stop receiving emails from it, send an email
to [email protected].
To post to this group, send email to [email protected].
Visit this group at http://groups.google.com/group/fricas-devel.
For more options, visit https://groups.google.com/groups/opt_out.
