Results 1 to 5 of 5

Math Help - Delta Epsilon

  1. #1
    Member billa's Avatar
    Joined
    Oct 2008
    Posts
    100

    Delta Epsilon

    if someone could tell me if I did anything wrong, or could do anything better with this problem please let me know

    Follow Math Help Forum on Facebook and Google+

  2. #2
    o_O
    o_O is offline
    Primero Espada
    o_O's Avatar
    Joined
    Mar 2008
    From
    Canada
    Posts
    1,408
    Looks good. Though if you just want to present the proof, all that scrapwork isn't necessary and you simply start from "Given \epsilon > 0, Let \delta = \min \left(1, \frac{\epsilon}{6}\right) ..." and so on.

    One thing to note: | x - 1| \ \Leftrightarrow \ -1 < x - 1 < 1 \ \Leftrightarrow \ 4 < x + 4 < 6 \ \Rightarrow |x+4| < {\color{red}6}
    Follow Math Help Forum on Facebook and Google+

  3. #3
    Member billa's Avatar
    Joined
    Oct 2008
    Posts
    100
    Thanks o_O
    and sorry, but if you don't mind, I understand your note but how is it helpful here?
    Follow Math Help Forum on Facebook and Google+

  4. #4
    o_O
    o_O is offline
    Primero Espada
    o_O's Avatar
    Joined
    Mar 2008
    From
    Canada
    Posts
    1,408
    Assuming |x-1| < 1, we get |x+4| < 6 not |x+4|<5
    Follow Math Help Forum on Facebook and Google+

  5. #5
    Member billa's Avatar
    Joined
    Oct 2008
    Posts
    100
    ahh, i see now
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. Solving Delta Epsilon Proof (Given Epsilon)
    Posted in the Calculus Forum
    Replies: 1
    Last Post: September 15th 2010, 04:42 PM
  2. Replies: 0
    Last Post: October 27th 2009, 08:06 AM
  3. epsilon delta?
    Posted in the Algebra Forum
    Replies: 3
    Last Post: May 2nd 2009, 11:09 AM
  4. Epsilon/Delta.
    Posted in the Calculus Forum
    Replies: 10
    Last Post: August 13th 2008, 10:56 PM
  5. epsilon delta
    Posted in the Calculus Forum
    Replies: 5
    Last Post: August 11th 2008, 03:50 AM

Search Tags


/mathhelpforum @mathhelpforum