Results 1 to 2 of 2

Math Help - Limit Question

  1. #1
    Newbie
    Joined
    Sep 2009
    Posts
    1

    Limit Question

    Pretty simple question, I guess... When evaluating a limit, my teacher says that if you get 0/0 from substitution that you should continue evaluating using analytical, algebraic or graphical methods, but what about when your substitution leads to an integer or any number over zero. Does this mean that the limit does not exist?
    Follow Math Help Forum on Facebook and Google+

  2. #2
    MHF Contributor
    Joined
    Aug 2007
    From
    USA
    Posts
    3,110
    Thanks
    2
    If you get 0/0 from your substitution, you most likely have not understood what you are doing. If substitution is to have any value, you must FIRST demonstrate continuity. You must not, therefore, wonder if your result from substitution might imply a discontinuity. Your thinking is backwards.

    Please go back and study the definition of a limit.

    After that, look up and try to comprehend "Indeterminate Forms".

    If you choose to substitute wily-nilly, your existing, finite values are very encouraging, but they are not conclusive.
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. Replies: 4
    Last Post: November 7th 2011, 03:27 PM
  2. Replies: 1
    Last Post: August 8th 2010, 11:29 AM
  3. limit question
    Posted in the Calculus Forum
    Replies: 2
    Last Post: November 11th 2009, 08:04 PM
  4. Another Limit Question
    Posted in the Calculus Forum
    Replies: 1
    Last Post: October 10th 2008, 11:38 PM
  5. Another limit question
    Posted in the Calculus Forum
    Replies: 4
    Last Post: June 27th 2008, 01:02 PM

Search Tags


/mathhelpforum @mathhelpforum