What is the equation of a hyperbola with a horizontal transverse axis, centered at the origin, vertices at (+/- 3, 0), and asymptotes with slopes of +/- 1/2?
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What is the value of f(x) if f(x) = 3, knowing that f is a constant function?
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What is the maximum value of f(x) = x^3 - 6x^2 + 9x on the interval [0, 4]?