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Homework Help: Forward and backward error

  1. Sep 21, 2008 #1
    The sine function is given by the infinite series
    sin(x) = x - x3/3! + x5/5! + x7/7! + .......
    a) What are the forward and backward errors if we approximate the sine function
    by using only the first term in the series, for x = 0.1, 0.5, 1.0?
    b) Using the first two terms.
  2. jcsd
  3. Sep 21, 2008 #2


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    Homework Helper

    Welcome to PF!

    Hi yenbibi! Welcome to PF! :smile:

    Show us what you've tried, and where you're stuck, and then we'll know how to help. :smile:
  4. Sep 21, 2008 #3


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    Yes, show your work. Looks to me like a simple arithmetic problem.
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