On Nov 11, 2:38 pm, "[EMAIL PROTECTED]" <[EMAIL PROTECTED]> wrote:
> On 11 Lis, 22:21, Robert Samal <[EMAIL PROTECTED]> wrote:

Hi,

> > Hi Minh,
>
> > > I think this issue has been fixed in sage-3.1.4. Under sage-3.1.4, the
> > > command
>
> > > sage: lim ( x*(sqrt(x^2)-sqrt(x))/sqrt(x^2 -x), x=oo)
> > > +Infinity
>
> > > returns what you'd expect.
>
> > That's great news, perhaps I should update more frequently.
> > By any chance, does somebody know what was the issue?
>
> I have the same incorrect answer from maxima 5.13. Some bugs in limits
> have been fixed in maxima recently. The new maxima has been probably
> installed into sage.

Yes, we usually ship the latest Maxima release.

>
>
> > Not only am I curious, but I'd also like to know, how much should
> > I rely on results I get from sage in future.
>
> I never trust anything computed using any CAS. :-)
> I use maxima or maple or sage frequently and I have always in my mind
> that the answers could be incorrect.

+1

In the end all CAS have bugs just like regular software. One should
never trust any CAS and comparing results from two different systems
that ideally do not share any components is a good thing :)

> Robert Marik

Cheers,

Michael
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