Mathematica 9 is now available
Services & Resources / Wolfram Forums / MathGroup Archive
-----

MathGroup Archive 2008

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

Search the Archive

Re: A question regarding a hyperbolic geometric function

  • To: mathgroup at smc.vnet.net
  • Subject: [mg86469] Re: A question regarding a hyperbolic geometric function
  • From: Phil I <p.ingrey at gmail.com>
  • Date: Wed, 12 Mar 2008 00:11:17 -0500 (EST)
  • References: <200803100704.CAA24775@smc.vnet.net> <fr5e50$oa2$1@smc.vnet.net>

On Mar 11, 7:59 am, "Ali K. Ozdagli" <ozda... at gmail.com> wrote:
> This would be a nice way to go. I have just checked the Abramowitz and
> Stegun book but unfortunately there are no such transformations for
> Hypergeometric1F1. Does anybody know a transformation for
> Hypergeometric1F1 that can help me solve my numerical accuracy problem
> the way Tony did below. Any other ideas are also appreciated.
>
> Best,
>
> Ali
>
I've been working with the confluent hypergeometrics for a while the
equation you want is:
M[a,b,z] -> (Gamma[b]/Gamma[a])*Exp[z]*z^(a-b)          as z -> inf
[Abramowitz and Stegun equation 13.1.4]
with your x this should be a very good approximation.

Hope this helps


  • Prev by Date: Re: How to extract data from an analytical summation equation?
  • Next by Date: Re: How can I make the NSolve output the roots meeting
  • Previous by thread: Re: A question regarding a hyperbolic geometric function
  • Next by thread: Re: A question regarding a hyperbolic geometric function