Which one of the following statements is TRUE for all positive functions f (n)?
(A)Answer:(A)
Explanation:
Option A: It always holds because if we square the input variable, then the highest order in the polynomial will also get squared.
Option B: It is not true in cases when f(n) is a polynomial function.
Option C: An exponential function may be increasing or decreasing, so this condition may not always be true.
Option D: It need not be true for a function that is decreasing.
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