If Y = X⁷ Cos X, Find Dy/dx

question 38

Multiple Choice

If y = x⁷ cos x, find dy/dx.

• A) 7x⁶ cos x + x⁷ sin x
• B) 7x⁶ sin x - x⁷ cos x
• C) 42x⁵ cos x - 14x⁶ sin x - x⁷ cos x
• D) 42x⁵ cos x - 14x⁶ sin x
• E) 7x⁶ cos x - x⁷ sin x

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