Re: Is this normal for Limit?
- To: mathgroup at smc.vnet.net
- Subject: [mg82281] Re: Is this normal for Limit?
- From: Bhuvanesh <BhuvaneshBhatt at gmail.com>
- Date: Wed, 17 Oct 2007 03:51:24 -0400 (EDT)
No, this was a bug, an inconsistency in handling of assumptions via $Assumptions vs through the Assumptions option:
In[1]:= $Assumptions = {k > 0};
In[2]:= Limit[Exp[-k t], t -> Infinity] //InputForm
Out[2]//InputForm= Limit[E^(-(k*t)), t -> Infinity]
In[3]:= Limit[Exp[-k t], t -> Infinity, Assumptions->$Assumptions]
Out[3]= 0
Note that if you avoid the list, everything works.
This is already fixed internally, and will appear in a future release.
Sorry for the inconvenience.
Bhuvanesh,
Wolfram Research