Find the Specified Quantity $y = 3 \cos \left( 3 x + \frac { \pi } { 2 } \right)$

question 14

Multiple Choice

Find the specified quantity.
-Find the period of $y = 3 \cos \left( 3 x + \frac { \pi } { 2 } \right)$ .

• A) \(\frac { \pi } { 2 }\)
• B) \(\pi\)
• C) 3
• D) \(\frac { 2 \pi } { 3 }\)

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