1. Limited time only! Sign up for a free 30min personal tutor trial with Chegg Tutors
    Dismiss Notice
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: Proving limits

  1. Feb 27, 2015 #1
    lim(9-x) as x->4 = 5
    I thought I was supposed to do this:
    But apparently I was supposed to use delta and epsilon?
    I'm not sure how to find either of these. I know you find epsilon first but I'm really confused so if anyone knows just HOW to find it, that would be extremely helpful. Thank you.
  2. jcsd
  3. Feb 27, 2015 #2


    Staff: Mentor

Share this great discussion with others via Reddit, Google+, Twitter, or Facebook

Have something to add?
Draft saved Draft deleted