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Math Help - Simple Harmonic Functions

  1. #1
    Newbie
    Joined
    Oct 2008
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    Simple Harmonic Functions

    Hello everyone,
    I have a question regarding simple harmonic functions.
    I know how to find the Amplitude, Period, Phase Shift ect. when the problem is in this form:
    <br />
f(t)=a*cos(2t)+b*sin(2t)

    and in this form:

    f(t)=a*sin(2t)+b*sin(2t)

    but how can I find the Amplitude, Period, Phase Shift ect. when the problem is in this form:

    f(t)=t+sin(2t)

    or

    f(t)=a*cos(t)+b*sin(2t)

    thanks for any help
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  2. #2
    Junior Member Infophile's Avatar
    Joined
    May 2009
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    50
    Hello,

    The first function has nor period neither amplitud.

    The second has a period : 2\pi and you can only find the max of it.

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  3. #3
    Newbie
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    Oct 2008
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    great thanks, I wish my teacher would explain this, (or book), why does the second function have a period of 2pi though? can you find the phase shift? -thanks
    Last edited by boblee; May 4th 2009 at 09:42 AM.
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