If f(x) = 4x(sin x + cos x), find f'(x) = f'(4) = -12 sin (4) + 20 cos (4) OF

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Q: If f(x) = 6 sin x + 10 cos x, then f'(x) = f'(4) =

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Q: If f(x) ƒ'(x) = f'(2) = 4 sin x 3 + cos x then

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Q: If f(x) f' (æ) = 2 sin x + 11 cos x, then f'(2) = %3D

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