Domain of Rational Functions

Instructions

  • This page includes exercises that you should attempt to solve yourself. You can check your answers and watch the videos explaining how to solve the exercises.
  • When you are done, you can use the graph to pick another section or use the buttons to go to the next section.

Learning Objectives

  • The domain of rational functions
  • How to find any holes and vertical asymptotes of a rational function

Exercises

1.

  1. \((-\infty,-2)\cup(-2,\infty)\)
  2. \((-\infty,-5)\cup(-5,\infty)\)

2.

Domain: \((-\infty,-1)\cup(-1,4)\cup(4,\infty)\)

3.

Hole when \(x=-1\)
Vertical Asymptote: \(x=4\)

4.

Domain: \((-\infty,-1)\cup(-1,0)\cup (0,\infty)\)
Hole when \(x=0\)
Vertical Asymptote: \(x=-1\)