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Let f(x) = x^2 + 1, x ∈ [2, 7]. Let P = {2,4,5,7}. Find L(f,P)...

Let f(x) = x^2 + 1, x ∈ [2, 7]. Let P = {2,4,5,7}. Find L(f,P) and U(f,P).

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