Results 1 to 2 of 2

Math Help - Limits to infinite

  1. #1
    Member
    Joined
    Feb 2010
    Posts
    98

    Limits to infinite

    Limits to infinite have always confused me. I was going to see if someone could maybe further explain them to me. Here is one of the problems from one of my tests earlier this year.

    lim as x-> infinte (sqrt(x-1)-sqrt(x+1)) The answer = 0... but why?
    Follow Math Help Forum on Facebook and Google+

  2. #2
    MHF Contributor
    skeeter's Avatar
    Joined
    Jun 2008
    From
    North Texas
    Posts
    11,621
    Thanks
    426
    Quote Originally Posted by tbenne3 View Post
    Limits to infinite have always confused me. I was going to see if someone could maybe further explain them to me. Here is one of the problems from one of my tests earlier this year.

    lim as x-> infinte (sqrt(x-1)-sqrt(x+1)) The answer = 0... but why?
    \lim_{x \to \infty} (\sqrt{x-1} - \sqrt{x+1}) \cdot \frac{\sqrt{x-1} + \sqrt{x+1}}{\sqrt{x-1} + \sqrt{x+1}}<br />
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. infinite limits
    Posted in the Calculus Forum
    Replies: 4
    Last Post: May 23rd 2011, 03:20 PM
  2. Infinite limits
    Posted in the Pre-Calculus Forum
    Replies: 1
    Last Post: February 15th 2009, 06:50 PM
  3. Help with infinite limits
    Posted in the Calculus Forum
    Replies: 1
    Last Post: February 5th 2009, 12:24 PM
  4. infinite limits
    Posted in the Calculus Forum
    Replies: 1
    Last Post: February 1st 2009, 05:36 PM
  5. Infinite limits
    Posted in the Calculus Forum
    Replies: 2
    Last Post: January 31st 2008, 04:36 PM

Search Tags


/mathhelpforum @mathhelpforum