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Re: A bug of limit?

  • To: mathgroup at smc.vnet.net
  • Subject: [mg42368] Re: A bug of limit?
  • From: Bill Rowe <listuser at earthlink.net>
  • Date: Wed, 2 Jul 2003 06:36:30 -0400 (EDT)
  • Sender: owner-wri-mathgroup at wolfram.com

On 7/1/03 at 8:45 AM, rex_chaos at 21cn.com (Rex_chaos) wrote:

> Take the limit of (Sqrt(n^4 + n + 1) - n^2)*(n + 3)
>   when n infinity, mathematica give the result is -1/2
>   However, the correct answer should be 1/2

With vers 5.0 running on MacOS 10.2.6 I get the following:

In[1]:=
a=(Sqrt[n^4+n+1]-n^2)*(n+3);
Limit[a,n\[Rule]Infinity]

Out[2]=
1/2


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