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MathGroup Archive 2006

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Re: Table through zero...strange

  • To: mathgroup at smc.vnet.net
  • Subject: [mg67017] Re: [mg66988] Table through zero...strange
  • From: Sseziwa Mukasa <mukasa at jeol.com>
  • Date: Wed, 7 Jun 2006 05:09:24 -0400 (EDT)
  • References: <200606061027.GAA20673@smc.vnet.net>
  • Sender: owner-wri-mathgroup at wolfram.com

On Jun 6, 2006, at 6:27 AM, leptonic wrote:

> Hello,
>
> When i type in Mathematica (version 4) Table[x, {x, -0.1, 0, 0.02}]
>
> it gives me {-0.1, -0.08, -0.06, -0.04, -0.02, -3.46945 x 10-18]}
> but for example Table[x, {x, -0.1, 0, 0.05}] will give a reasonable
> {-0.1, -0.05, 0.}.
>
> Probably a very stupid question but i can't figure out why the zero
> makes problem.

It's a precision problem from using machine precision numbers, if  
it's a problem you can use exact values:

Table[x,{x,-1/10,0,1/50}]

Regards,

Ssezi


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