Find the derivative.s = t6 cos t - 12t sin t - 12 cos t
A. 
= - t6 sin t + 6t5 cos t - 12t cos t
B. 
= - t6 sin t + 6t5 cos t - 12t cos t - 24 sin t
C. 
= - 6t5 sin t - 12 cos t + 12 sin t
D. 
= t6 sin t - 6t5 cos t + 12t cos t
Answer: A
Mathematics
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A. 
B. 
C. 
D. 
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