Find Dy/dt $$y = \cos ^ { 3 } ( \pi t - 12 )$$

question 547

Multiple Choice

Find dy/dt.
- $$y = \cos ^ { 3 } ( \pi t - 12 )$$

• A) \(- 3 \cos ^ { 2 } ( \pi t - 12 ) \sin ( \pi t - 12 )\)
• B) \(- 3 \pi \sin ^ { 2 } ( \pi t - 12 )\)
• C) \(3 \cos ^ { 2 } ( \pi t - 12 )\)
• D) \(- 3 \pi \cos ^ { 2 } ( \pi t - 12 ) \sin ( \pi t - 12 )\)

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