Services & Resources / Wolfram Forums
MathGroup Archive
*Archive Index
*Ask about this page
*Print this page
*Give us feedback
*Sign up for the Wolfram Insider

MathGroup Archive 2007

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

Search the Archive

Re: Limit of Floor function

  • To: mathgroup at
  • Subject: [mg73886] Re: [mg73830] Limit of Floor function
  • From: Andrzej Kozlowski <akoz at>
  • Date: Fri, 2 Mar 2007 06:45:02 -0500 (EST)
  • References: <>

On 1 Mar 2007, at 12:21, Eric Smith wrote:

> Mathematica 5.2 evaluates one-sided limits of the Floor function
> correctly.  But if I just ask:
>    Limit[Floor[x],x->10]
> It replies "10".  Shouldn't it tell me the limit is undefined,
> since the Floor function has a step discontinuity at every integer
> value?
> Thanks,
> Eric

Mathematica's Limit computes directional limits only (Limit[f[x]-,x- 
 >a] is the same as Limit[f[x],x->a, Direction -> -1]). Using  
explicit values for the Direction option we get





Both of these are correct answers.

Andrzej Kozlowski

  • Prev by Date: Re: change filename automatically in Export Command
  • Next by Date: Re: Problems...
  • Previous by thread: Limit of Floor function
  • Next by thread: Limit of Floor function