1. Not finding help here? Sign up for a free 30min 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!

Infinite Limits

  1. Jan 2, 2006 #1
    For f(x) = (2x + 5) / |3x - 4|, use graphs and tables to find the limit as x approaches infinity of f(x) and the limit as x approaches negative infinity of f(x)... Also identify any horizontal asymptotes...

    When i graph the function in my graphing calculator, it looks like y will never reach a specific value as x approaches pos or neg infinity.. i went to table and checked at x value or 20000000 and -200000000 and i get 2/3 and -2/3 respectively

    is this correct?
    limit as x approaches pos inf = 2/3
    limit as x approaches neg inf = -2/3

    I'm not sure about the horizontal asymptotes?
    would they be y = 2/3 and y = -2/3? I think? or is it something in between that?

    Thanks for the input.
  2. jcsd
  3. Jan 2, 2006 #2
    Yes, are you supposed to find the answer with a graphing calculator or L'Hoptial's rule? Did you have to find the vertical asymptote?
  4. Jan 2, 2006 #3
    i'm guessing a graphing calculator.. because it says graphs and tables.. we've never done L'Hopital's rule
  5. Jan 2, 2006 #4
    Okay, then looks like you are golden.
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?

Similar Discussions: Infinite Limits
  1. Infinite limits (Replies: 2)

  2. Infinit limit (Replies: 4)

  3. Infinite limits (Replies: 2)

  4. Infinite Limits (Replies: 5)

  5. Infinite limits (Replies: 4)