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Find the range of the function f(x) = (x^2 + x = 2)/(x^2 + x + 1) where x ∈ R

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Find the range of the function f(x) = (x2 + x = 2)/(x2 + x + 1) where x ∈ R

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Thus, max value of f(x) = 1 + 4/3 = 7/3

Therefore, Rf = [2, 7/3]

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