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Bessel J0 zeros

• To: mathgroup at smc.vnet.net
• Subject: [mg21739] Bessel J0 zeros
• From: "Roberto Brambilla" <brambilla.roberto at sri.enel.it>
• Date: Wed, 26 Jan 2000 03:45:39 -0500 (EST)
• Sender: owner-wri-mathgroup at wolfram.com

Hello !

I'm using Mathematica 3.0 and I have found a strange behaviour
of standard package BesselZeros :

BesselJZeros[0,2] works
BesselJZeros[0,k] k=3,4,5,6  does not work at all
BesselJZeros[0,k] k=7,8... works again 

(and very well BesselJZero[0,30] in 3.2 sec).

so no problem : "ubi maior minor cessat".
Can anyone explain me this incongrous fact ?

Thanks    Roberto Brambilla
Dott. Roberto Brambilla
ENEL PEA
Via A.Volta, 1
20093 Cologno Monzese (MI)
tel +39.2.7224.5364
fax +39.2.7224.5465
bramrob at pea.enel.it