Well, that was exactly what I was going to do, but I have no idea how to implement something like a (symbolic) k-th order derivative, such that I could then do the limit. Moreover, the derivative seems to be something close to the core of something like a CAS, so I don't think I could be able to help for that.
That's why I was asking for help at least for this derivative part (and maybe also the limit is not so easy as well). I will really try to be helpful, but I still need some support Regards Maurizio On 26 Feb, 21:13, Robert Bradshaw <rober...@math.washington.edu> wrote: > On Feb 26, 2009, at 2:49 AM, Maurizio wrote: > > > > > Hi all, > > > what do you think about the inverse_laplace() now present in SAGE? > > > I am not very satisfied, I am not able to derive the results for even > > simple functions. > > It is a simple wrapper around the maxima inverse laplace function. > > > What I'd like is to get numerical results, so I thought there should > > have been a way to obtain them, but I didn't find. Can you help me? > > > In addition, I found on the net the Post's inversion Laplace formula > > (http://en.wikipedia.org/wiki/Post%27s_inversion_formula). It has > > been successfully implemented in Maple, here: > >http://www.mapleprimes.com/blog/alec/numerical-inverse-laplace- > > transform-0 > > > I wanted to try this out in SAGE, but the problem seems to be the > > necessity of doing the k-th derivative of the function, where k is a > > symbolic variable (that has to go to +Infinity then). I couldn't do > > that, do you know if that's possible? > > Not that I am aware of at the moment, but if it would be great if > someone (for instance you) could implement it and send us a patch. > > - Robert --~--~---------~--~----~------------~-------~--~----~ To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to sage-support-unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-support URLs: http://www.sagemath.org -~----------~----~----~----~------~----~------~--~---
