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Re: One to the power Infinity

  • To: mathgroup at smc.vnet.net
  • Subject: [mg36037] Re: One to the power Infinity
  • From: Selwyn Hollis <slhollis at earthlink.net>
  • Date: Tue, 13 Aug 2002 05:23:00 -0400 (EDT)
  • References: <aitfon$cfu$1@smc.vnet.net> <aj01qv$18l$1@smc.vnet.net> <aj17ad$2kh$1@smc.vnet.net> <aj5bfk$abr$1@smc.vnet.net>
  • Sender: owner-wri-mathgroup at wolfram.com

All I can say about my last post on this topic is: Nevermind. I was 
looking at the graph of Abs[(1-x)^(1/x^2)] near 1 instead of 0. Aargg.

Mathematica's answers (Infinity) for both Limit[Abs[(1-x)^(1/x^2)], 
x->0, Direction-> +1] and Limit[Abs[(1-x)^(1/x^2)], x->0, Direction-> 
+1] are correct.

---
Selwyn


Selwyn Hollis wrote:

>>Selwyn Hollis <slhollis at earthlink.net> wrote:

> 
> Actually it seems you've discovered a bug in Limit. If we allow complex 
> values, then Limit[(1-x)^(1/x^2), x->0, Direction-> +1] should be 0, 
> which is evident from the graph of Abs[(1-x)^(1/x^2)]. Mathematica gives 
> Infinity for Limit[Abs[(1-x)^(1/x^2)], x->0, Direction-> +1] as well. If 
> we don't allow complex values, then Limit[(1-x)^(1/x^2), x->0, 
> Direction-> +1] can't exist at all (even as Infinity or -Infinity).
> 
> 



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