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anonymous

  • 5 years ago

Find a function for the graph below. (Graph is in attached file.) It's a multiple choice question and the answers can be: a. f(t) = 3sin 6t b. f(t) = 6cos 3t c. f(t) = -3sin 3t d. f(t) = 3sin 3t

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  1. anonymous
    • 5 years ago
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  2. anonymous
    • 5 years ago
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    c

  3. anonymous
    • 5 years ago
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    3 in front of sin changes the amplitude or the magnitude from the usual -1 to + 1 to -3 to +3. The 3 inside the sin() changes the period from the usual 0 to 2pi to 0 to 2pi/3. The minus sign makes a mirror image of sin() in regards of the x axis.

  4. anonymous
    • 5 years ago
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    thanks!

  5. anonymous
    • 5 years ago
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    http://www.wolframalpha.com/input/?i=plot+-sin%283x%29

  6. anonymous
    • 5 years ago
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    http://www.wolframalpha.com/input/?i=plot+-3sin%283x%29 this is your case

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spraguer (Moderator)
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