MathGroup Archive 1994

[Date Index] [Thread Index] [Author Index]

Search the Archive

Error in Bessel Zeros Package?

  • To: mathgroup at christensen.Cybernetics.NET
  • Subject: [mg298] Error in Bessel Zeros Package?
  • From: "Roger M. Jones" <rmj at LLEWELYN.SLAC.Stanford.EDU>
  • Date: Tue, 06 Dec 1994 22:34:41 -0800

Dear Users,

Is there a bug in the Bessel function routine for finding zeros?
The following (confirmed by curves):

FindRoot[fd[3,1.2,x]==0,{x,.1}]
Out[]=
6.00731

gives a different result with the built in routine:

BesselJPrimeYPrimeJPrimeYPrimeZeros[3,1.2,1]

Out[]=
{15.9664}

This is true for all nu values 1,2, etc, for the 1st root.
Perhaps there is a patch already made for this?

---
Yours,

Roger
(rmj at llewelyn.slac.stanford.edu)





  • Prev by Date: Re: Multidimensional Fourier Transform
  • Next by Date: Re: Generalized Eigenvector and Singular Value Decompositions
  • Previous by thread: How to set editor for Unix text-form Mma?
  • Next by thread: Re: Error in Bessel Zeros Package?