Well, i know it is hard to do it in a completely general settings. But at least i would like to do something that can handle the cases that usually appear in high-school or first years of college. Even if specially complicated cases would raaise an error, i think that having something that works for students would be a possitive addition.
Thanks for the links. On 8 ene, 15:33, "ma...@mendelu.cz" <ma...@mendelu.cz> wrote: > On 8 led, 12:12, mmarco <mma...@unizar.es> wrote: > > > Hi > > > One of the skills that is studied in high-school and college is to > > compute the domain of a real function of real variable given by a > > formula. > > > I haven't seen that implented in sage, so i plan to do so. > > Hi, I wish you success, but I think that this is very hard task. > > Consider a function f(x) such that Sage canot solve equation f(x)==0 > and now find the domain of the functions like ln(f(x)) or 1/f(x). > > For numerical way how to at least estimate domain of a function in one > or two variables see [1] and [2] > > Robert > > [1]http://wood.mendelu.cz/math/maw-html/index.php?lang=en&form=df > [2]http://wood.mendelu.cz/math/maw-html/index.php?lang=en&form=df3d > > > > > In ordxer to do that, i would need some way to represent real > > intervals (maybe with enpoints given by exact expressions, such as > > exp(3), sqrt(7) or pi), and to compute intersections and unions of > > them. > > > So, my question is ¿is something like that available?. If it is not, i > > could try to implement it too, ¿would it be best to do it as a new > > class RealSubset or something like that? > > > Thanks in advance. > > > Miguel Marco -- To post to this group, send an email to sage-devel@googlegroups.com To unsubscribe from this group, send an email to sage-devel+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-devel URL: http://www.sagemath.org
