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Find the maximum and minimum of f(x) = (sin x+1/2 cos x) in 0 ≤ x ≤ π/2

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Find the maximum and minimum of

f(x) = (sin x+1/2 cos x) in 0 ≤ x ≤ π/2

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max. value is 3/4 at x = π/6 and min. value is 1/2 at x = π/2

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