21. This opened the way to the study of the theory of iterations of rational functions . 22. Polynomials do not have horizontal asymptotes; such asymptotes may however occur with rational functions . 23. An extended version of the abstract idea of rational function is used in algebraic geometry. 24. Parametrizes in terms of rational functions of. 25. Combining rational functions with trigonometric ones gives you, for example, the sinc function. 26. This is a ( messy ) integral of a rational function of sine and cosine. 27. When considered defined by a complex variable, the hyperbolic functions are rational functions of holomorphic. 28. Partial fraction decomposition of real rational functions is also used to find their Inverse Laplace transforms. 29. Thus it is a rational function . 30. In the case of rational functions the denominator could similarly be required to be a monic polynomial.
