Re: bug in series expansion routines.

*To*: mathgroup at smc.vnet.net*Subject*: [mg55255] Re: bug in series expansion routines.*From*: Paul Abbott <paul at physics.uwa.edu.au>*Date*: Thu, 17 Mar 2005 03:30:47 -0500 (EST)*Organization*: The University of Western Australia*References*: <d193sk$nnb$1@smc.vnet.net>*Sender*: owner-wri-mathgroup at wolfram.com

In article <d193sk$nnb$1 at smc.vnet.net>, Richard Fateman <fateman at cs.berkeley.edu> wrote: > Series[BesselJ[0, x], {x, 2.404, 10}] > > gives an error about illegal series composition, which > is inappropriate, since using 2404/1000 in there > produces a series. > > My guess is that this bug could be exhibited in > many ways. > version 5.0 No error in version 5.1. Also, since it appears that are expanding BesselJ[0, x] about its first zero, j0, perhaps Simplify[Series[BesselJ[0, x]/BesselJ[1, j0], {x, j0, 5}] /. BesselJ[0, j0] -> 0] is more useful. Cheers, Paul -- Paul Abbott Phone: +61 8 6488 2734 School of Physics, M013 Fax: +61 8 6488 1014 The University of Western Australia (CRICOS Provider No 00126G) 35 Stirling Highway Crawley WA 6009 mailto:paul at physics.uwa.edu.au AUSTRALIA http://physics.uwa.edu.au/~paul