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!

For which numbers is this convergence?

  1. Jan 22, 2008 #1

    I need to know for which nubers of x the serie is convergence.


    Is this possible whith d'Alombert? I have tried, but with no result.

  2. jcsd
  3. Jan 22, 2008 #2


    User Avatar
    Science Advisor

    Your series is an infinite geometric series with a=x/(x+1). This series converges for |a|<1. You should be able to find what is the range of x for convergence.
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook