# Thread: Determine the domain of a rational function

1. ## Determine the domain of a rational function

I am having a lot of trouble with this one...actually all of the problems that require me to find the domain of a rational function. If someone could walk me through how to solve one I would really appreciate it. Thank you!!!

2. Originally Posted by cechmanek32
I am having a lot of trouble with this one...actually all of the problems that require me to find the domain of a rational function. If someone could walk me through how to solve one I would really appreciate it. Thank you!!!
the domain is the set of input values (usually x-values) for which a function is defined. rational functions are only undefined where their denominator is zero. thus, to find their domain, solve for the denominator = zero, and say the domain is everything except those numbers

3. nice and to the point, Jhevon!

4. Originally Posted by Jonboy
nice and to the point, Jhevon!
...why, thank you...i try

i just hope the OP got it...

5. Originally Posted by cechmanek32
I am having a lot of trouble with this one...actually all of the problems that require me to find the domain of a rational function. If someone could walk me through how to solve one I would really appreciate it. Thank you!!!
Try posting one of the questions you can't do. Then someone can use that as the example you want.

6. Thanks Jhevon...that explanation was great!