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Normal for Limit

  • To: mathgroup at
  • Subject: [mg74256] Normal for Limit
  • From: Mr Ajit Sen <senra99 at>
  • Date: Thu, 15 Mar 2007 19:09:57 -0500 (EST)

Dear MathGroup,

  I refer to Andrzej Kozlowski's post [mg 33514] where
  he recommended the use of Series to find limits, and
  then used Normal with Landau symbols (big O). 

  I therefore deduced (incorrectly ?) that

       Limit[f[x],x->p] === Normal[f[x]+ O[x,p]],

  except when p is a "pole". 
  So, is there a work around, still using Normal, to
  obtain +/- Infinity?

  My guess is that we might have to modify the args
  of the O.  But I might be wrong.

  I'd be grateful for any help.

  Thanks a lot in advance.

  Ajit Sen.



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