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: Estimating Sums of Alternating Series help

  1. Apr 11, 2010 #1
    1. The problem statement, all variables and given/known data
    [PLAIN]http://img696.imageshack.us/img696/3438/46981606.jpg [Broken]

    2. Relevant equations

    3. The attempt at a solution
    in those squars, im sure about everything that i did and i get it wrong..
    the only thing i dont know is bn+1 how would i know if its =, < or > than 0.008 ?

    once i know that, everything else just follow it..
    Last edited by a moderator: May 4, 2017
  2. jcsd
  3. Apr 11, 2010 #2
    someone please?
  4. Apr 12, 2010 #3


    User Avatar
    Homework Helper

    i haven't checked your working, but doesn't it ask for n as "an integer"?
  5. Apr 12, 2010 #4

    First, note that n is supposed to be NATURAL NUMBER. So can n have trailing digits after the decimal place? As for whether you should have =, <, or >... reread both the problem statement (the error should be less than .008) as well as the Alternating Series Estimation Theorem (consider the relationship between [itex]b_{n+1}[/itex] and the error).
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook