[Date Index] [Thread Index] [Author Index]

Re: wierd Log[0] *0 result

• To: mathgroup at smc.vnet.net
• Subject: [mg9055] Re: [mg9022] wierd Log[0] *0 result
• From: jpk at max.mpae.gwdg.de
• Date: Thu, 9 Oct 1997 01:42:34 -0400
• Sender: owner-wri-mathgroup at wolfram.com

Hi Patrick,

my Mma 3.0.1 say

x*Log[x] /. x->0 

Indeterminate


thats because x*Log[x]== Log[x^x] and x^x /. x->0== 0^0  is indeterminate

but if You do

Limit[x*Log[x] , x->0] 

0

You get the desired result.

Hope that helps
Jens
 
> Hello mma users,
> 
> I have a quick question on the following computation:
> 
> the natural log of 0 times 0 writen Log[0]*0
> 
> 
> 
> Should that not be 0 ?
> 
> mma is returning an Indeterminate result
> 
> Can somebody please help me understand this computation.
> 
> 
> 
> Many Thanks
> 
> -patrick
>