Master Determining if a function is a polynomial or not

The video tutorial explains how to determine if a function is a polynomial by checking if all variable powers are non-negative integers. It provides examples of polynomial and non-polynomial functions, highlighting key rules such as avoiding variables in denominators and under roots. Special cases like constant functions are also discussed, emphasizing that zero power is valid for polynomials.

Provide an example of a polynomial function and explain why it qualifies as such.

Why are fractions not considered integers in the context of polynomial functions?