Hi Rob, On Sat, 24 Jul 2010 22:00:12 -0700 (PDT) Rob Beezer <goo...@beezer.cotse.net> wrote:
> Hi Burcin, > > As Dana Ernst has now mentioned on the ticket, this an outgrowth of > the professional development workshop that Jason Grout, Karl-Dieter > Crisman and myself have been running this summer on Sage through the > Mathematical Association of America. Dana is one of our top > students. ;-) But seriously, he is interested in contributing to > Sage and I've been helping him along with the process. His patch was perfect. I'd be really happy to see other people contribute to symbolics. There are lot's of relatively simple issues new developers could address. We should be more careful about keeping a clean user interface however. > Another one of the "students" (faculty at mostly undergraduate > colleges) wondered about why these keywords were not present (I think > they may be in some other of the M's, but obviously not Maple, and I > can't recall exactly). So we all suggested they could be added, and > Dana took the bait. Here is the help page for the MMA command Limit: http://reference.wolfram.com/mathematica/ref/Limit.html They seem to only allow -1 and 1 for the Direction argument. I suggest we add "left" and "right" (instead of "from_left" and "from_right"). In addition, deprecate "above" and "below". Comments? Burcin > So three developers thought this would be useful in their teaching. > Which is not to say it shouldn't be discussed here in the open. I'm > all for avoiding clutter, but also thought these keywords would be > valuable (and IMHO opinion, preferable to "above" and "below" when we > tend to draw the axis for the domain horizontally!). > > Thanks for bringing the discussion here. > > Rob > > On Jul 24, 2:30 pm, Burcin Erocal <bur...@erocal.org> wrote: > > Hi, > > > > Trac #9200 [1] adds new keywords from_left and from_right to the top > > level limit() function. We already have above, below, minus, plus as > > keywords. I wonder if a new one is necessary, and if it should be > > "from_left/from_right". > > > > [1]http://trac.sagemath.org/sage_trac/ticket/9200 > > > > For reference, Maple only support 4 keywords [2], left, right, real, > > complex. > > > > [2]http://www.maplesoft.com/support/help/Maple/view.aspx?path=limit > > > > IMHO, we should also try to keep the interface simple, and not > > clutter things up by supporting many different ways of doing the > > same thing. > > > > Any comments? > > > > Cheers, > > Burcin > -- 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
