Re: A question regarding a hyperbolic geometric function
- To: mathgroup at smc.vnet.net
- Subject: [mg86409] Re: A question regarding a hyperbolic geometric function
- From: "Steve Luttrell" <steve at _removemefirst_luttrell.org.uk>
- Date: Tue, 11 Mar 2008 02:54:28 -0500 (EST)
- References: <fr2mhu$o5p$1@smc.vnet.net>
You could force a higher precision thus: Hypergeometric1F1[-26.9`50, -20.1`50, 300000] 2.993210409216105689504284278598817110109420300*10^130260 Stephen Luttrell West Malvern, UK "Ali K. Ozdagli" <ozdagli at gmail.com> wrote in message news:fr2mhu$o5p$1 at smc.vnet.net... > Hi, > > I am working with Mathematica in order to solve an ordinary > differential equation with several boundary conditions. It turned out > that the solution is Kummer confluent hypergeometric function, > HyperGeometric1F1[a,b,x]. My problem is that for the values of a, b > and x I am interested in, e.g. a=-26.9, b=-20.1, x=300000, the > numerical accuracy of Mathematica is very poor. > > Can somebody suggest me a way to improve the mathematical accuracy of > HyperGeometric1F1? I prefer a quick and easy way but also appreciate > any hard way. > > Best, > > Ali > > -- > > Ali K. Ozdagli > Ph.D. Student in Economics > at University of Chicago >