KnowraRational functionLinked fromLinked fromThe 21 pages that link to Rational function, each with the reason it gives.All 21Broader topic 4Related 6Narrower topic 4Compared with 7PolynomialCompared with: Unlike a polynomial, it may have variables in a denominator.Polynomial interpolationCompared with: Rational interpolants can represent some poles and sharp changes that polynomial interpolants handle poorly.Entire functionCompared with: A rational function is entire only when its denominator's apparent poles cancel, leaving a polynomial.Polynomial degreeCompared with: Its numerator and denominator have degrees, but the quotient is not generally a polynomial.Polynomial functionCompared with: Unlike a polynomial function, a rational function can be undefined at inputs that make its denominator zero.Quadratic functionCompared with: Rational functions can have asymptotes and excluded inputs absent from ordinary quadratic polynomials.Cubic functionCompared with: Rational functions may have poles, whereas cubic functions are defined for every real input.