If fl (x) and hex) are functions from the set of positive
Chapter 3, Problem 3.2.39(choose chapter or problem)
If fl (x) and hex) are functions from the set of positive integers to the set of positive real numbers and fl (x) and f2 (x) are both 8(g(x , is (fl - f2 )(X) also 8(g(x ? Either prove that it is or give a counterexample.
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