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

    lanedance

    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