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: Limits and Sequences

  1. Jan 16, 2008 #1
    http://img215.imageshack.us/img215/8624/limitscz6.jpg [Broken]

    That's the question and the answer.

    I don't get why it converges to -1/2 and how you can tell just by looking. Maybe I'm not understanding well enough but I understand how to find the limit, just I thought the limit to infinity showed that 0 was what it converged to, not -1/2.

    Any help? Thanks.
    Last edited by a moderator: May 3, 2017
  2. jcsd
  3. Jan 16, 2008 #2
    It converges to 0. The source you got -1/2 from is mistaken.
    Last edited: Jan 16, 2008
  4. Jan 16, 2008 #3


    User Avatar
    Homework Helper

    According to what i see if the graph were drawn, as n-->+infinity, the curve approaches a horizontal asymptote which is the n-axis, meaning that it converges to zero. And the method they used is correct but how they got -1/2, I have no idea.
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook