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Re: Integration Problem

  • To: mathgroup at smc.vnet.net
  • Subject: [mg126367] Re: Integration Problem
  • From: Murray Eisenberg <murray at math.umass.edu>
  • Date: Thu, 3 May 2012 22:25:53 -0400 (EDT)
  • Delivered-to: l-mathgroup@mail-archive0.wolfram.com
  • References: <201205030834.EAA29972@smc.vnet.net>
  • Reply-to: murray at math.umass.edu

The reason is that 1/10 is an exact number whereas 0.1 is an approximate 
real number.

On 5/3/12 4:34 AM, Michael Musheghian wrote:
> Greetings!
>
> I found that evaluation of this 2 integrals yield a bit different result. What could be the reason?
>
> Integrate[E^(-1/10 ((1 + r2z)^2)), {r2z, -Infinity, Infinity}]
>
> Integrate[E^(-0.1 ((1 + r2z)^2)), {r2z, -Infinity, Infinity}]
>

-- 
Murray Eisenberg                     murray at math.umass.edu
Mathematics & Statistics Dept.
Lederle Graduate Research Tower      phone 413 549-1020 (H)
University of Massachusetts                413 545-2859 (W)
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Amherst, MA 01003-9305



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