Answer : In other words, it is both a polynomial function of degree three, and a real function. A cubic function has either one or three real roots; all odd-degree polynomials have at least one real root. The graph of a cubic function always has a single inflection point.
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Answer : In other words, it is both a polynomial function of degree three, and a real function. A cubic function has either one or three real roots; all odd-degree polynomials have at least one real root. The graph of a cubic function always has a single inflection point.