[Maxima] diff(y,t) where y=f(z) and z=f(t)
ryanlists at gmail.com
Tue Jan 16 12:59:29 CST 2007
Thanks to Robert and Stavros I am over my hump.
On 1/16/07, Robert Dodier <robert.dodier at gmail.com> wrote:
> On 1/16/07, Ryan Krauss <ryanlists at gmail.com> wrote:
> > 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?
> The ' marks so-called noun expressions -- the nouns flag of ev
> causes all nouns to be evaluated. Naming one noun causes that
> one to be evaluated.
> expr : 'diff(foo(x), x) + 'integrate(foo(x), x);
> => noun expression
> ev(expr, nouns);
> => both diff and integrate are evaluated
> ev(expr, diff);
> => only diff evaluated, integrate still a noun
> ev(expr, integrate);
> => diff still a noun, integrate evaluated
> Robert Dodier
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