An example of a polynomial function that meets the above criteria is f(x) = 4x + 3.
From the information given, the given criteria is f(3) = 15.
F'(x) is non zero and f"(x) = 0.
Let f(x) = 4x + 3
f(3) = (4 × 3) + 3
f(3) = 15
f'(x) = 4
f"(x) = 0
Therefore, f(x) = 4x + 3 satisfies all the criteria.
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