Re: limit problem
- To: mathgroup at smc.vnet.net
- Subject: [mg58944] Re: limit problem
- From: Chris Chiasson <chris.chiasson at gmail.com>
- Date: Sun, 24 Jul 2005 01:22:03 -0400 (EDT)
- References: <dbt3lm$sk4$1@smc.vnet.net> <42E2A56C.3050808@gmail.com>
- Reply-to: Chris Chiasson <chris.chiasson at gmail.com>
- Sender: owner-wri-mathgroup at wolfram.com
As others have kindly demonstrated, Assuming is able to pass its assumptions to Limit. I know that the second argument of Simplify and FullSimplify is for assumptions. For this reason, I think WRI should update FullSimplify and Simplify to pass their assumptions to Limit and Integrate, etc. Is there a reason why they should not do so? On 7/23/05, Jean-Marc Gulliet <jeanmarc.gulliet at gmail.com> wrote: > Chris Chiasson wrote: > > Dear MathGroup, > > Honestly, I see no reason why this should return "unevaluated" instead of zero. > > > > FullSimplify[Limit[E^(-R t),t\[Rule]Infinity],Infinity>R>0&&Element[R,Reals]] > > > > 5.2 on windows > > > > Regards, > Hi Chris, > > The following works: > > In[1]:= > Limit[E^(-t), t -> Infinity] > > Out[1]= > 0 > > In[2]:= > Limit[E^((-R)*t), t -> Infinity] > > Out[2]= > Limit[E^((-R)*t), t -> Infinity] > > In[3]:= > Assuming[R > 0, Limit[E^((-R)*t), t -> Infinity]] > > Out[3]= > 0 > > Best regards, > /J.M. > -- Chris Chiasson http://chrischiasson.com/ 1 (810) 265-3161
- Follow-Ups:
- Re: Re: limit problem
- From: Andrzej Kozlowski <akoz@mimuw.edu.pl>
- Re: Re: limit problem