Re: Hypergeometric2F1 gives wrong complex infinities
- To: mathgroup at smc.vnet.net
- Subject: [mg100896] Re: Hypergeometric2F1 gives wrong complex infinities
- From: Jens-Peer Kuska <kuska at informatik.uni-leipzig.de>
- Date: Thu, 18 Jun 2009 04:49:06 -0400 (EDT)
- Organization: Uni Leipzig
- References: <h19i96$p8o$1@smc.vnet.net>
- Reply-to: kuska at informatik.uni-leipzig.de
Hi, Hypergeometric2F1[1, I, I + 1, -Exp[a]] /. a -> 36 gives Hypergeometric2F1[I, 1, 1 + I, -E^36] and N[] -0.0348098 + 0.269793 I so, *what* have you put into Mathematica ? Regards Jens Wieland Brendel wrote: > Dear all! > I currently have a problem with the hypergeometric function: Consider > > Hypergeometric2F1[1, I, I + 1, -Exp[a]] > > Whenever I set a > 36 I only get "complex infinity" as a result although > it should be perfectly finite (take 10 as a scale). Is there any way to > expand the range of a to higher values? > > I would be very thankful for a solution! A big thanks in advance and > best greetings from germany! > > Wieland Brendel > > PS: I use Mathematica 7. >