Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Homework Help: Finding the value of δ when ε = 1 & Finding a number δ that fulfills a condition

  1. Sep 19, 2010 #1
    EDIT: I actually solved the first problem correctly...I must've entered it in wrong earlier. I could still use help with the second problem though.

    I have my first test of the semester tomorrow and I'm just trying to get everything I don't fully understand out of the way tonight. Any help is appreciated :)

    1. The problem statement, all variables and given/known data

    [STRIKE]1. For the limit below, find values of δ that correspond to the ε values. ε = 1[/STRIKE]

    2. Use the given graph of f(x) = 1/x to find a number δ that fulfills the following condition.

    2. Relevant equations

    1. BfXa7.gif

    2. 9Zoi6.gif

    3. The attempt at a solution

    [STRIKE]1. lim x->1 = 0
    Since ε = 1, y=(0+1) and (0-1)

    y = 1 and -1
    When y=1, x=.851 --- When y=-1, x=1.111

    |1-0.851| = 0.149
    |1-1.111| = 0.111

    Delta = 0.111 ???

    2. I'm not really sure how to solve this...
    Last edited: Sep 19, 2010
  2. jcsd
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook

Can you offer guidance or do you also need help?
Draft saved Draft deleted