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MathGroup Archive 1999

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Re: Can't get the 3rd Bessel zero!

  • To: mathgroup at smc.vnet.net
  • Subject: [mg19847] Re: Can't get the 3rd Bessel zero!
  • From: "Kevin J. McCann" <kevin.mccann at jhuapl.edu>
  • Date: Sun, 19 Sep 1999 01:20:32 -0400
  • Organization: Johns Hopkins University Applied Physics Lab, Laurel, MD, USA
  • References: <7rshbi$3gs@smc.vnet.net>
  • Sender: owner-wri-mathgroup at wolfram.com

John,

BesselJZeros[0,3]

{2.40483, 5.52008, 8.65373}

Nearly instantaneous.

Good luck,

Kevin
--

Kevin J. McCann
Johns Hopkins University APL


I. Ioannou <iioannou at u.washington.edu> wrote in message
news:7rshbi$3gs at smc.vnet.net...
> Hi all,
>
> I've been working with BesselJZeros recently, and the code I wrote shows
> the following peculiar behavior. While I can get all the Bessel zeros I
> need for most of the functions, I get mathematica to hang up at the 3rd
> Bessel zero of the 0th order Bessel.
>
> So, BesselJZeros[0,2] works, BesselJZeros[1,5] works, but
> BesselJZeros[0,3] doesn't work. (waited for a couple of hours before I
> aborted the calculation) Does anybody know what this behavior is due to?
> Is it a bug? Has it been seen before and by anybody else? Or is it
> particular to my machine?
>
> Thanks, John
> --
>       Ioannis   I    Ioannou                   phone: (206)-543-1372
>       g-2 group, Atomic Physics                fax:   (206)-685-0635
>       Department of Physics
>       University of Washington        e-mail: iioannou at u.washington.edu
>




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