Positive polynomial

A positive polynomial is a polynomial function that takes positive values for all inputs from a specified domain, typically the set of real numbers. More formally, a polynomial \( P(x) \) is considered positive if \( P(x) > 0 \) for all \( x \) in the chosen set (for instance, for all \( x \in \mathbb{R} \) or for all \( x \) in a specific interval).