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Consider the function on the interval (0, 2?).f(x) = x/2 + cos x(a) Find the open intervals on which the function is increasing or decreasing.

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Consider the function on the interval (0, 2?).f(x) = x/2 + cos x(a) Find the open intervals on which the function is increasing or decreasing. (Enter your answers using interval notation.)(b) Apply the First Derivative Test to identify the relative extrema.

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