Indeed, using quad (hich is from mpbath, by the way (by bad !)) is easy. But it doesn't solve my problem : it *worsens* it. I must catch special cases of conversions from rationals to reals. See the updated worksheet (still public).
-- Emmanuel Charpentier Contemplating reverting to dental surgery (simpler...) Le jeudi 16 avril 2015 14:48:08 UTC+2, William a écrit : > > On Thu, Apr 16, 2015 at 5:45 AM, Emmanuel Charpentier > <emanuel.c...@gmail.com <javascript:>> wrote: > > Thank you very much, William. The interface of Sagemath cloud is a bit > ... > > cloudy... for me. > > > > I'm pursuing my problem. The numerical_integral docstring shows that > this > > function has arguments looking suspiciously like Maxima's quad_qag*, > > interface to quadpack. And indeed, Maxima has the same problem > > (documentation on the above worksheet to come). > > > > Now sympy (part of sage) has a nice "quad" function for (low-dimension) > > quadrature. If I could figure a way to use it from sage... > > You should be able to just use sympy from Sage, following any of their > examples/documentation: > > http://docs.sympy.org/dev/modules/mpmath/calculus/integration.html > > ?? > > > > > Are you aware of other numerical integration/quadrature function in > > Sagemath's components (allowing for infinite bounds) that could be used > for > > this purpose ? > > > > > > > To be continued, > > > > -- > > Emmanuel Charpentier > > > > Le jeudi 16 avril 2015 14:22:06 UTC+2, William a écrit : > >> > >> On Thu, Apr 16, 2015 at 3:27 AM, Emmanuel Charpentier > >> <emanuel.c...@gmail.com> wrote: > >> > Never mind the plots (you can paste plots in the Web editor, but they > do > >> > not > >> > record...). > >> > > >> > Instead, see this minimal example on Sagemath cloud: > >> > >> Hi -- content is private by default on SageMathCloud (unlike github). > >> I've taken the liberty to make just that one worksheet public > >> > >> > >> > https://cloud.sagemath.com/projects/ec50c702-c618-4167-be42-ec4381d49144/files/Minimal%20numerical%20integration%20problem%20demonstration.sagews > > >> > >> by clicking "i", then "Share publicly". > >> > >> > > >> > Any idea ? > >> > > >> > -- > >> > Emmanuel Charpentier > >> > > >> > -- > >> > You received this message because you are subscribed to the Google > >> > Groups > >> > "sage-support" group. > >> > To unsubscribe from this group and stop receiving emails from it, > send > >> > an > >> > email to sage-support...@googlegroups.com. > >> > To post to this group, send email to sage-s...@googlegroups.com. > >> > Visit this group at http://groups.google.com/group/sage-support. > >> > For more options, visit https://groups.google.com/d/optout. > >> > >> > >> > >> -- > >> William (http://wstein.org) > > > > -- > > You received this message because you are subscribed to the Google > Groups > > "sage-support" group. > > To unsubscribe from this group and stop receiving emails from it, send > an > > email to sage-support...@googlegroups.com <javascript:>. > > To post to this group, send email to sage-s...@googlegroups.com > <javascript:>. > > Visit this group at http://groups.google.com/group/sage-support. > > For more options, visit https://groups.google.com/d/optout. > > > > -- > William (http://wstein.org) > -- You received this message because you are subscribed to the Google Groups "sage-support" group. To unsubscribe from this group and stop receiving emails from it, send an email to sage-support+unsubscr...@googlegroups.com. To post to this group, send email to sage-support@googlegroups.com. Visit this group at http://groups.google.com/group/sage-support. For more options, visit https://groups.google.com/d/optout.
