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3.4 Sine and Cosine Function Graphs - Review

Describe how the amplitude of a sine or cosine function affects its graph. Provide an example with a specific function.

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AI InstructorAUG 12, 2024, 11:36:57 AM

The amplitude of a sine or cosine function determines the height of the peaks and the depth of the troughs from the midline (usually the x-axis). For example, in the function y=3sin(x), the amplitude is 3, meaning the graph will oscillate between 3 and -3. This is because the amplitude is the coefficient in front of the sine or cosine function, which stretches or compresses the graph vertically.

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Given the function y=2cos(x), what is the amplitude of the graph?

Select one of the following options:
  • A.

    2

  • B.

    0.5

  • C.

    π

  • D.

    1

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