Moby wrote:
> I have what is probably a very simple question. I have a function
> defined in Maxima, say the following:
>
> G(s) := 1/(3*s^2+2*s+1)
>
> Now I would like to define a variable r such that
>
> r^2 = 3*s^2
>
> and then define G(s) in terms of this new variable r. How does one go
> about achieving this in Maxima?
Perhaps this will help:
subst([s = r/sqrt(3)], 1/(3*s^2+2*s+1))
-> 1/(r^2+2*r/sqrt(3)+1)
Ray