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Is this normal for Limit?

• To: mathgroup at smc.vnet.net
• Subject: [mg82241] Is this normal for Limit?
• From: Michael Mandelberg <mmandelberg at comcast.net>
• Date: Tue, 16 Oct 2007 03:23:32 -0400 (EDT)

I have what I would think is the following simple limit to evaluate:

$Pre = Refine[#] &;
$Assumptions = {t \[Element] Reals, k \[Element] Reals,  k > 0};

In[3]:= Limit[Exp[-k t], t -> Infinity]

The results is:

Out[3]= Limit[\[ExponentialE]^(-k t), t -> \[Infinity]]

In other words Mathematica 6.0.0 punts on this.  Is there any sense in
which this limit is not well-defined?

Michael Mandelberg

• Follow-Ups:
  • Re: Is this normal for Limit?
    • From: Andrzej Kozlowski <akoz@mimuw.edu.pl>