Groups > comp.soft-sys.math.maple > #1013

Re: Differentiating with respect to an expression

From	"Nasser M. Abbasi" <nma@12000.org>
Newsgroups	comp.soft-sys.math.maple
Subject	Re: Differentiating with respect to an expression
Date	2014-11-11 18:50 -0600
Organization	Aioe.org NNTP Server
Message-ID	<m3uatb$st7$1@speranza.aioe.org> (permalink)
References	<m3u1gm$7ir$1@news.albasani.net> <87sihpl61w.fsf@san.rr.com> <m3u6n6$kkr$1@news.albasani.net>

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On 11/11/2014 5:39 PM, none Rouben Rostamian wrote:

> Thanks much, Joe, this is exactly what I was hoping for.
> I had no idea about frontend() or the Physics package.
>
> This brings up a somewhat related question.  Doing
>     frontend(int, [x(t)^2, x(t)]);
> we get x(t)^3/3, which is fine.  The following, however,
> issues an Error message:
>      frontend(int, [x(t)^2, x(t)=a..b]);
>
> Is there a way to get that to work too?
>
> Rouben
>

I do not use frontend() either. But if all else fails, you
can simply use calculus

------------------------------
restart;
f := frontend(int,[x(t)^2, x(t)]);
f := unapply(f,t);
limit(f(t),t=b)-limit(f(t),t=a);
-------------------------

     (1/3)*x(b)^3-(1/3)*x(a)^3

--Nasser

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Thread

Differentiating with respect to an expression rouben@shadow.(none) (Rouben Rostamian) - 2014-11-11 22:10 +0000
  Re: Differentiating with respect to an expression Joe Riel <joer@san.rr.com> - 2014-11-11 14:35 -0800
    Re: Differentiating with respect to an expression rouben@shadow.(none) (Rouben Rostamian) - 2014-11-11 23:39 +0000
      Re: Differentiating with respect to an expression "Nasser M. Abbasi" <nma@12000.org> - 2014-11-11 18:50 -0600
        Re: Differentiating with respect to an expression "Nasser M. Abbasi" <nma@12000.org> - 2014-11-11 19:44 -0600
        Re: Differentiating with respect to an expression rouben@shadow.(none) (Rouben Rostamian) - 2014-11-12 01:55 +0000
          Re: Differentiating with respect to an expression Joe Riel <joer@san.rr.com> - 2014-11-11 18:00 -0800
            Re: Differentiating with respect to an expression Joe Riel <joer@san.rr.com> - 2014-11-11 18:03 -0800
              Re: Differentiating with respect to an expression rouben@shadow.(none) (Rouben Rostamian) - 2014-11-12 02:44 +0000
                Re: Differentiating with respect to an expression Joe Riel <joer@san.rr.com> - 2014-11-11 19:16 -0800
                Re: Differentiating with respect to an expression rouben@shadow.(none) (Rouben Rostamian) - 2014-11-12 04:53 +0000
      Re: Differentiating with respect to an expression Joe Riel <joer@san.rr.com> - 2014-11-11 17:45 -0800
        Re: Differentiating with respect to an expression Joe Riel <joer@san.rr.com> - 2014-11-11 17:52 -0800
        Re: Differentiating with respect to an expression rouben@shadow.(none) (Rouben Rostamian) - 2014-11-12 02:03 +0000

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