Services & ResourcesWolfram ForumsMathGroup Archive

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

Error in Subtraction with V4.0??

• To: mathgroup at smc.vnet.net
• Subject: [mg22463] Error in Subtraction with V4.0??
• From: beintinc at aol.com (BEIntInc)
• Date: Wed, 8 Mar 2000 02:22:00 -0500 (EST)
• Sender: owner-wri-mathgroup at wolfram.com

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?

TIA,

John Brooks

• Follow-Ups:
  • Re: Error in Subtraction with V4.0??
    • From: Daniel Lichtblau <danl@wolfram.com>