Rational Functions

A rational function

A rational function is formed when a polynomial is divided by another polynomial.

Below are some links to sections dealing with rational functions. There is a wealth of material here that would be helpful to any student of mathematics studying this topic.

The following link takes you to an overview of rational functions. It presents a definition of a rational function as long as some introductory material concerned with finding the roots and discontinuities of rational functions.

f(x) = s(x)/t(x)

These next links present some fundamental ideas concerning one of the simplest of rational functions, f(x) = 1/x.

Graph of 1/x

This next link gives a detailed explanation of how to work with a rational function. This includes a complete presentation of how to find roots, discontinuities, and end behavior.

Rational function graph

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