Find the derivative.y = 3 sin 6x cos x

A. -3 sin 6x sin x + 18 cos x cos 6x
B. 3 sin 6x sin x + 18 cos x cos 6x
C. -3 sin 6x sin x + cos x cos 6x
D. sin 6x sin x + 18 cos x cos 6x

Answer: A

Mathematics

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