Re: Re: Numerical accuracy of Hypergeometric2F1

*To*: mathgroup at smc.vnet.net*Subject*: [mg55795] Re: [mg55743] Re: Numerical accuracy of Hypergeometric2F1*From*: DrBob <drbob at bigfoot.com>*Date*: Wed, 6 Apr 2005 03:11:40 -0400 (EDT)*References*: <d2qj7t$p0o$1@smc.vnet.net> <200504050721.DAA26989@smc.vnet.net>*Reply-to*: drbob at bigfoot.com*Sender*: owner-wri-mathgroup at wolfram.com

The result isn't negative in version 5.1.1: Integrate[x^100/(x+2),{x,0,2}] -950334333471499723789633616808264702205277137749053016850353071587328/\ 1089380862964257455695840764614254743075 - 1267650600228229401496703205376 \ Log[2] + 1267650600228229401496703205376 Log[4] 6.306563320381821*^27 Bobby On Tue, 5 Apr 2005 03:21:13 -0400 (EDT), janos <jtoth at helka.iif.hu> wrote: > I wanted to calculate Integrate[x^100/(x+2),{x,0,2}] and even the sign > of the result is just negatvie. The reason is the same as above: Mathematica > calculates the integral symbolically, using a hypergeometric function, > then (s)he is unable to numerically evaluate it. > I got the good result if I used NIntegrate. > Janos Toth > Dept Math Anal > Budapest Univ Technol Ecol. > > > > -- DrBob at bigfoot.com

**References**:**Re: Numerical accuracy of Hypergeometric2F1***From:*"janos" <jtoth@helka.iif.hu>