[Maxima] maxima - rules and patterns

Robert Marik marik at mendelu.cz
Mon Mar 3 23:57:09 CST 2008


Yes, as Robert Dodier wrote, I wish to get a web application witch
differentiates function in small short steps. The draft version is on
http://wood.mendelu.cz/math/maw/derivace/derivace.html (this link changes in
future).

I wish to prevent  expansion of   (sin(3x+x^2))'=cos(3x+x^2) *
(3*(x)'+(x^2)')
since the step (sin(3x+x^2))'=cos(3x+x^2) * (3x+x^2)' is skipped.

As I wrote, I have a draft version of this application, but I am not fully
satisfied with the result and I will try the hints from this discussion
group. So thank you for your answers.

Robert Marik

On Tue, Mar 4, 2008 at 3:43 AM, Robert Dodier <robert.dodier at gmail.com>
wrote:

> On Mon, Mar 3, 2008 at 8:36 AM, Stavros Macrakis <macrakis at alum.mit.edu>
> wrote:
>
> >  I must be missing something here.  Why is derivace sometimes linear
> >  and sometimes not?
>
> Well, I think the goal is to reimplement the rules for derivatives,
> but under control of the user, so that only one rule is applied
> at a time.
>
> A rule for linearity could also be constructed via defrule,
> in which case the declare(..., linear) and remove(..., linear)
> stuff isn't needed.
>
> Robert
>
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