[Maxima] The new limit code and integrate()

Dieter Kaiser drdieterkaiser at web.de
Wed Sep 16 16:53:33 CDT 2009


Am Mittwoch, den 16.09.2009, 13:58 +0100 schrieb Rupert Swarbrick:
> Hi,
> 
> I read the conversation about changing how limit deals with integrate()
> etc. and I completely agree that it's the right thing to
> do. However... I've got some code that I wrote this morning and worked
> until I pulled the latest version of maxima, so I was kind of surprised!
> 
> Basically, it looks something like
> 
> approx_for_eps: 'integrate( something_nasty, s, A-eps, A );
> 
> and then you get a Taylor series for the approximation by
> differentiating the above and taking the limit as eps -> 0+. Problem is,
> the limits now all include noun forms :)
> 
> Is there a way to tell Maxima that "Yes, I know what I'm doing. This
> integral is continuous." ?
> 
> I think changing the limit code to be more mathematically correct is
> good. But I also think that one needs to be able ask for the more
> specific result if the integrand is known to be smooth (say) but is far
> From being integrable.

Hello Rupert,

do you have a more complete example what you would like to do?

Dieter Kaiser




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