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MathGroup Archive 1998

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Re: Sigh...anyone care to explain this?

  • To: mathgroup at smc.vnet.net
  • Subject: [mg14334] Re: [mg14294] Sigh...anyone care to explain this?
  • From: "Jens-Peer Kuska" <kuska at linmpi.mpg.de>
  • Date: Thu, 15 Oct 1998 00:28:40 -0400
  • Sender: owner-wri-mathgroup at wolfram.com

Hi Selwyn,

this is clearly a bug. Here is a work around

In[4]:=
Needs["Calculus`Limit`"]
In[5]:=
Limit[Integrate[E^x/x,{x,1,y}],y->Infinity]

Hope that helps
  Jens

-----Original Message-----
From: Selwyn Hollis <shollis at peachnet.campus.mci.net> To:
mathgroup at smc.vnet.net
Subject: [mg14334] [mg14294] Sigh...anyone care to explain this?


>Sigh...   anyone care to explain this?
>
>In:       clearlyDivergentImproperIntegral =
>Integrate[E^x/x,{x,1,Infinity}]
>           clearlyDivergentImproperIntegral // N
>
>Out:          -ExpIntegralEi[1]
>                 -1.89512
>
>--
>~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 
>Dr. Selwyn Hollis
>Associate Professor of Mathematics
>Armstrong Atlantic State University
>Savannah, GA 31419 USA
><http://www.math.armstrong.edu/faculty/hollis/>
>~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>
>
>



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