Find the Frequency of the Simple Harmonic Motion Described by the Function

question 39

Multiple Choice

Find the frequency of the simple harmonic motion described by the function below. $$d = - 3 \cos ( 18 \pi t )$$

• A) 9
• B) \(- \frac { 2 \pi } { 3 }\)
• C) \(18 \pi\)
• D) \(- \frac { 2 } { 3 }\)
• E) \(- 3\)

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