Results 1 to 2 of 2

Thread: Help with series problem

  1. #1
    Member
    Joined
    Sep 2017
    From
    nj
    Posts
    175
    Thanks
    1

    Help with series problem

    series n to inf of [5(-1)^n] / [n^(2/n)]

    i tried the direct comparison test with the absolute value of the function, but it ends up diverging. So, the series does not absolutely coverge. Then i tried to do the nth test test, and i think the limit is non zero. because of the alternative sign and b-sub n is = 5 for limit
    Follow Math Help Forum on Facebook and Google+

  2. #2
    Junior Member Walagaster's Avatar
    Joined
    Apr 2018
    From
    Tempe, AZ
    Posts
    59
    Thanks
    25

    Re: Help with series problem

    You are correct. The nth term doesn't go to 0 so the series diverges.
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. Replies: 12
    Last Post: May 4th 2016, 01:02 PM
  2. Replies: 2
    Last Post: Jul 26th 2012, 04:53 PM
  3. Replies: 3
    Last Post: Sep 29th 2010, 06:11 AM
  4. Replies: 0
    Last Post: Jan 26th 2010, 08:06 AM
  5. Series problem
    Posted in the Calculus Forum
    Replies: 13
    Last Post: Jun 23rd 2006, 01:28 PM

/mathhelpforum @mathhelpforum