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Math Help - Can Someone Help Me find the Period of the slow oscillation of....

  1. #1
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    Can Someone Help Me find the Period of the slow oscillation of....

    (125/19)cos(1.8t)-(125/19)cos(2t)

    I tried 2pi/1.8 but did not work
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  2. #2
    Member Mentia's Avatar
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    Bellingham, WA
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    It can be shown that the slow oscillation is given by (2*Pi)/(2.0 - 1.8) = 10*Pi
    In general, the slow oscillation (envelope) uses the difference of the two arguments, and the fast oscillation uses half the sum of the two arguments.
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  3. #3
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    Thank you!! It did work!
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