On Mon, 18 Apr 2022 at 14:30, GUSTAVO TERRA BASTOS wrote:
>
> Hi guys.
>
> Given two n x n matrices M, N, we know it is a big problem to find the
> positive integer "i" such that M^i = N (There are other hypothesis involved).
> In my particular case, I would like to do the same for 3 x 3
On Tue, 6 Dec 2022 at 12:53, Emmanuel Charpentier
wrote:
>
>
> And Sympy currently never returns.
With current SymPy master it takes 6 seconds:
In [1]: %time log(tan(pi/2*tanh(x))).diff(x).limit(x, oo)
CPU times: user 5.73 s, sys: 24 ms, total: 5.75 s
Wall time: 5.75 s
Out[1]: 2
The fix was
effect is usually of most impact:
>
> https://maxima.sourceforge.io/docs/manual/maxima_46.html#index-domain
>
> there may be other undocumented effects, but the one above tends to explain a
> lot already.
>
> On Sunday 3 December 2023 at 06:26:20 UTC-8 Oscar Benjamin wrote:
On Thu, 4 Jan 2024 at 12:15, Emmanuel Charpentier
wrote:
>
> But this does not explain whiy Sage is uneble o check (numericalmlmy or
> otherwise) the solutions given by Sympy or Mathematica, which check in Sympy
> (I didn’t yet try to check them in Mathematica, the limitations of the
> current
On Tue, 28 Nov 2023 at 17:25, kcrisman wrote:
>
> Answering part of my question: it seems that sympy and maxima have
> different attitudes towards fractional powers of negative numbers, which
> may be the source of the problem.
>
> Yes. Maxima's attitude is that the square root of negative one
ies the defaults of Maxima, in particular we set domain to
> complex.
>
> On 3 December 2023 12:28:45 GMT, Oscar Benjamin
> wrote:
> >On Wed, 29 Nov 2023 at 12:40, Eric Gourgoulhon
> >wrote:
> >>
> >> Le mardi 28 novembre 2023 à 18:25:04 U
7, Dima Pasechnik wrote:
> >
> > Yes, Sage modifies the defaults of Maxima, in particular we set domain to
> > complex.
> >
> > On 3 December 2023 12:28:45 GMT, Oscar Benjamin
> > wrote:
> > >On Wed, 29 Nov 2023 at 12:40, Eric Gourgoulhon
>
On Wed, 29 Nov 2023 at 12:40, Eric Gourgoulhon wrote:
>
> Le mardi 28 novembre 2023 à 18:25:04 UTC+1, kcrisman a écrit :
>
> Yes. Maxima's attitude is that the square root of negative one is an
> expression which might have multiple values, rather than just picking one you
> hope might be
On Mon, 13 Nov 2023 at 21:32, Bùi Gia Nghĩa wrote:
>
> Hi!
> I have used Sage Cell Server to integrate the function (ln(x)^2 - 1) / (x *
> ln(x)). It should resulted in (ln(x)^2) / 2 - |ln(ln(x))| + C, as noted by my
> textbook and Wolfram|Alpha, but instead resulted in 1/2*log(x)^2 -
>
On Mon, 19 Feb 2024 at 20:25, Mark “Essa King” Sukaiti <
xzark.suk...@gmail.com> wrote:
> D(r)=-1/2*((3*r^2 - 1)*elliptic_ec((4*r/(r^2 + 2*r + 1)))^2 + (r^2 - 2*r +
> 1)*elliptic_ec((4*r/(r^2 + 2*r + 1)))*elliptic_kc((4*r/(r^2 + 2*r +
> 1/(pi^2*r^8 - 2*pi^2*r^7 - pi^2*r^6 + 4*pi^2*r^5 -
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