rational function

A rational function is a mathematical expression that is the quotient of two polynomials. This means it can be written in the form of a fraction where both the numerator and the denominator are polynomials. For example, if you have a polynomial P(x) and another polynomial Q(x), a rational function would be P(x)/Q(x). It's important to note that the denominator, Q(x), cannot be equal to zero. This concept is related to rational numbers, which are numbers that can be expressed as a fraction of two integers, where the denominator is not zero.12