Historically, it was thought that mimicking the normal notion, namely
J (x)
n
or in Maxima J[n](x) would have some advantage, but it turns out to just
confuse people who come from a numerical computing background.
RJF
> -----Original Message-----
> From: maxima-bounces at math.utexas.edu [mailto:maxima-
> bounces at math.utexas.edu] On Behalf Of David Joyner
> Sent: Friday, October 27, 2006 4:36 PM
> To: maxima
> Cc: David Joyner
> Subject: bugs in special functions?
>
> Hi:
>
> Based on
> http://idlastro.gsfc.nasa.gov/idl_html_help/BESELJ.html
> it seems as though the function bessel_j(nu,z) as described
> in
> http://maxima.sourceforge.net/docs/manual/en/maxima_16.html#SEC52
> should be bessel_j(z,nu):
>
> Maxima restarted.
> (%i1) bessel_j(2,4.8);
>
> (%o1) 0.11605038641637
> (%i2) bessel_j(4.8,2);
>
> (%o2) 0.009807521141
> (%i3)
>
> There are other Bessel functions which seem to be "backwards" as well.
> Does anyone else on this list agree with this?
>
> - David Joyner
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