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

Question 118

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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