## anonymous one year ago please help me with this *give an example of a rational function that is undefined at x=a where a is a real number. next state the domain of your rational function using both set and interval notation.

1. anonymous

can you help ?

2. Afrodiddle

This is a rational function f(x) = 7/x-a

3. anonymous

thats all?

4. Afrodiddle

I gave you an example. Make your own fill in the blanks :P $f(x) = \frac{ blank }{ x-a }$

5. anonymous

am i supposed to plug in numbers for a?

6. Afrodiddle

Does it state so? then yes.

7. Afrodiddle

the domain is all real numbers except a

8. anonymous

so i can have f(x)= 5/x-a?

9. Afrodiddle

Yes.

10. Afrodiddle

( - ∞ , a ) U ( a , + ∞ ) is the interval notation of a domain.

11. anonymous

and how can i get the interval and set notation?

12. Afrodiddle

{ x ϵ ℝ | x ≠ a } Is the set notation.

13. Afrodiddle

as I said, the domain is all real numbers except a.

14. anonymous

okay thanks so much!:)

15. Afrodiddle

No problem.

16. Afrodiddle

Dont forget to close the question