# How to find the domain of a rational function

One of the most important skills that students need to learn is How to find the domain of a rational function.

Solve Now ## 3.9: Rational Functions Decide math problem

Math is the study of numbers, shapes, and patterns. It is used to solve problems and to understand the world around us. Scan

If you're struggling with a math problem, scanning it for key information can help you solve it more quickly. Track Way

Track Way is a great place to go for a run.

## Finding Domain: Rational Function

Find the domain of the rational function {eq}f (x) = \frac {4} {x^2 + 3x - 4} {/eq} in interval notation. Step 1: The denominator of a function is the bottom number or equation of a

## Rational Function

Domain of Rational Function The domain of a rational function is the set of all x-values that the function can take. To find the domain of a rational function y = f (x): Set the denominator ≠ 0

Decide mathematic problems

If you're looking for a fun way to teach your kids math, try Decide math. It's a great way to engage them in the subject and help them learn while they're having fun.

Decide math questions

With Decide math, you can take the guesswork out of math and get the answers you need quickly and easily.

Math knowledge that gets you

Looking for a little help with your math homework? Check out our Math Homework Helper for tips and tricks on how to tackle those tricky math problems.

## Our people love us

The only reason I passed math classes. Excellent, if you are lost in a calcul in maths even if it is very long, it so easy and the app works fantastic. I solve the question first and then try it on the app to see if am correct.

Joesph Phillips

The app is excellent,it perform all calculations, I rate it 5 stars continue improving, if you're stuck on a question the app shows you all the different ways to solve it step-by step.

Earl Lozano

Used it in trig and calc with great results, even though sometimes I don't get the answers, i got to learn more from this app and it even has explanation which is very helpful for me! 5/5 stars. It's fantastic, but you have to wait to ad new solutions to different teniques of math which is understandable.

Michael Kennedy