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Describe the set f(D) in each of the following cases and identify sup f(D) and inf f(D). In which cases does f attain its supremum?

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Describe the set f(D) in each of the following cases and identify sup f(D) and inf f(D). In which cases does f attain its supremum? How about the infimum? a. f(x) = 1 - x on D = (0,1) (5 pts) b. f(x) = [x| on D = R (5 pts) c. f(x) = 5 -2 on D = (-10, -1] U [1, 10) (5 pts)

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