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anonymous

  • one year ago

a sound wave is modeled with the equation y = 1/4 cos 2(pi)/3 (then some weird zero with a line through it)... find the period and amplitude ...

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  1. Loser66
    • one year ago
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    I think you miss x after 2pi/3, right?

  2. anonymous
    • one year ago
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    no there is a weird circle after it

  3. anonymous
    • one year ago
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    u missed x after 2pi/3 right??

  4. anonymous
    • one year ago
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    yea u did

  5. anonymous
    • one year ago
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    there isn't an x on it, but I guess include the x if needed to solve it :/ i just want to know how to answer it

  6. anonymous
    • one year ago
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    oh im sorry im only 12

  7. Loser66
    • one year ago
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    ok, if you don't have x, then it is a point on a graph, no amplitude, no period.

  8. Loser66
    • one year ago
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    Suppose there is x there. I meant the function is \(y =(1/4) cos (2\pi/3) x\)

  9. Loser66
    • one year ago
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    amplitude is 1/4

  10. anonymous
    • one year ago
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    yes what he said im onlt 12

  11. kropot72
    • one year ago
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    Is this the equation? \[\large \frac{1}{4}\cos \frac{2 \pi}{3} \theta\]

  12. anonymous
    • one year ago
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    yeah

  13. kropot72
    • one year ago
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    The period is given by: \[\large T=\frac{2 \pi}{\frac{2 \pi}{3}}=3\]

  14. anonymous
    • one year ago
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    thanks!

  15. kropot72
    • one year ago
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    You're welcome :)

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spraguer (Moderator)
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is replying to Can someone tell me what button the professor is hitting...

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