[Maxima] diff(y,t) where y=f(z) and z=f(t)

[Stavros Macrakis]

On 1/16/07, Ryan Krauss <ryanlists at gmail.com> wrote:
> The main problem is that Maxima keeps outputting an answer that
> contains a derivative with repect to time which should be simple to
> evaluate.  But Maxima refuses to evaluate it and I don't know how to
> make it.  As I copy and paste from wxMaxima, I see the ' in front of
> the diff that forces the non-evaluation.  How would I make that go
> away?

expr: 'diff(x^2,x)

ev(expr,diff) => 2*x