Thanks for the help. I was hoping for something easier, but I'll go
with what I can get.
On a slightly-related note dealing with vectors, is there a correct way
to declare a vector as
dependent on another variable?
I've tried
(%i1) make3vec(vec) := vec :: makelist(vec[i],i,1,3);
(%i2) map(make3vec,[v]);
(%i3) depends( [ v ], x );
where v is a vector and x a scalar, but without success.
Thanks for any help you can offer.