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Homework Help: Sine Problem

  1. Jun 13, 2008 #1
    1. The problem statement, all variables and given/known data
    The half-wave design may be represented as a portion of a sine function. Determine a sine function that models the half wave design, assuming that the origin is at the point (0,0). Express in the form [tex]y=asin(b(x-c))+d[/tex]
    http://img231.imageshack.us/img231/3549/archpc5.jpg [Broken]​

    2. Relevant equations

    3. The attempt at a solution
    My answer is [tex]y=4sin(\frac{\pi}{10}(x+5))+7[/tex]

    Am I right? I was just confused when the question said to represent it as a portion of a sine function.
    Last edited by a moderator: May 3, 2017
  2. jcsd
  3. Jun 13, 2008 #2
    The function is fine, you just need to define a domain for the half-wave design.
  4. Jun 13, 2008 #3
    Thanks. I forgot to write it down, but the question already provides the domain of x between -5 and 5.
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