If f(x) = 2x(sin x + cos a), find f'(x). f'(x) = |-2xcos(x)-2xsin(x)+2sin(x)+2cos(x) Preview - 2x cos(x) – 2x sin(x) + 2 sin(x) + 2 cos(x) syntax ok Evaluate the derivative at x = 5. Enter an approximation, rounded to the nearest thousandth. f'(5) = Preview Get help: Video

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