#4102: make bessel_J symbolic
----------------------------------+-----------------------------------------
Reporter: jwmerrill | Owner: burcin
Type: enhancement | Status: new
Priority: major | Milestone: sage-5.6
Component: calculus | Resolution:
Keywords: | Work issues:
Report Upstream: N/A | Reviewers:
Authors: Benjamin Jones | Merged in:
Dependencies: | Stopgaps:
----------------------------------+-----------------------------------------
Comment (by benjaminfjones):
Replying to [comment:17 kcrisman]:
> > > * Maybe Python 3 string formatting? Though I am not sure how to
mix that with LaTeX braces.
> >
> > ???
>
> Such as [http://docs.python.org/3.1/library/stdtypes.html#str.format
this] and [http://docs.python.org/3.1/library/string.html#formatstrings
this]. Just for forward-compatibility (instead of the percent business).
Problem is that when I looked for ways to get around braces "naturally"
occurring in LaTeX, there weren't necessarily a lot of them. (Ways, that
is.)
Oh, right. I just didn't see what in the code you were referring to. I see
now.
Anyway, to one of your earlier questions, with the new code I'm about to
post the following conversions to and from Maxima work great:
{{{
sage: mb = maxima(bessel_I(1,x))
sage: mb.sage()
bessel_I(1, x)
sage: x,y = var('x,y')
sage: f = maxima(Bessel(typ='K')(x,y))
sage: f.derivative('x')
%pi*csc(%pi*x)*('diff(bessel_i(-x,y),x,1)-'diff(bessel_i(x,y),x,1))/2-%pi*bessel_k(x,y)*cot(%pi*x)
sage: m = f.derivative('x')
sage: m.sage()
-1/2*(x*bessel_I(-x, y)/y - x*bessel_I(x, y)/y + bessel_I(-x - 1, y) +
bessel_I(x - 1, y))*pi*csc(pi*x) - pi*cot(pi*x)*bessel_K(x, y)
}}}
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/4102#comment:18>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
and MATLAB
--
You received this message because you are subscribed to the Google Groups
"sage-trac" group.
To post to this group, send email to [email protected].
To unsubscribe from this group, send email to
[email protected].
For more options, visit this group at
http://groups.google.com/group/sage-trac?hl=en.
