MathGroup Archive 2000

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

Search the Archive

Re: Error in Subtraction with V4.0??

  • To: mathgroup at smc.vnet.net
  • Subject: [mg22533] Re: Error in Subtraction with V4.0??
  • From: Harald Giese <giese at ifm.uni-hamburg.de>
  • Date: Thu, 9 Mar 2000 03:24:21 -0500 (EST)
  • Organization: Institut fuer Meereskunde, Universitaet Hamburg
  • References: <8a5100$d6g@smc.vnet.net>
  • Sender: owner-wri-mathgroup at wolfram.com

BEIntInc wrote:
> 
> Can someone please explain why
> 
> 1. - .999999999999
> 
> results in
> 9.999778782798785*10^-13
> 
> The old way (by hand) gives me
> 
> 1x10^-12
> 
> Is this an error or am I missing something?
> 


Hi,

Have a look at chapter 1.1.2 "Exact and Approximate Results" in the
"Mathematica Book" (or in the online help).

Regards,
Harald

-- 

Harald Giese
Email: giese at dkrz.de
Phone: +49 (0)40 42838 5796; Fax: +49 (0)40 5605724
Institut fuer Meereskunde der Universitaet Hamburg
(Institute of Oceanography of the University of Hamburg)
Troplowitzstrasse 7, D-22529 Hamburg


  • Prev by Date: Re: Rookie question ..
  • Next by Date: Re: Detect pairs, tripples in a list
  • Previous by thread: Re: Error in Subtraction with V4.0??
  • Next by thread: Re: Error in Subtraction with V4.0??