[Mathematica 5.1] Bug Report - Two numerical values for a same variable
- To: mathgroup at smc.vnet.net
- Subject: [mg54117] [Mathematica 5.1] Bug Report - Two numerical values for a same variable
- From: Ling Li <ling at caltech.edu>
- Date: Fri, 11 Feb 2005 03:33:29 -0500 (EST)
- Sender: owner-wri-mathgroup at wolfram.com
Hi,
Mathematica v5.1 is much better than v5.0 on the accuracy of
integration. I am not talking about numerical accuracy---v5.0 sometimes
gives out two answers that are off by a constant for the same input.
However, I still get two different numerical values for a same variable
in v5.1
a=Exp[Integrate[(Cos[w]-Exp[-w^2/2]*Cos[23/100*w])/w, {w, 0, Infinity}]]
N[a]
N[a,20]
Thanks for looking into this problem.
--Ling