anonymous
  • anonymous
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.
Mathematics
chestercat
  • chestercat
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anonymous
  • anonymous
can you help ?
Afrodiddle
  • Afrodiddle
This is a rational function f(x) = 7/x-a
anonymous
  • anonymous
thats all?

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Afrodiddle
  • Afrodiddle
I gave you an example. Make your own fill in the blanks :P \[f(x) = \frac{ blank }{ x-a }\]
anonymous
  • anonymous
am i supposed to plug in numbers for a?
Afrodiddle
  • Afrodiddle
Does it state so? then yes.
Afrodiddle
  • Afrodiddle
the domain is all real numbers except a
anonymous
  • anonymous
so i can have f(x)= 5/x-a?
Afrodiddle
  • Afrodiddle
Yes.
Afrodiddle
  • Afrodiddle
( - ∞ , a ) U ( a , + ∞ ) is the interval notation of a domain.
anonymous
  • anonymous
and how can i get the interval and set notation?
Afrodiddle
  • Afrodiddle
{ x ϵ ℝ | x ≠ a } Is the set notation.
Afrodiddle
  • Afrodiddle
as I said, the domain is all real numbers except a.
anonymous
  • anonymous
okay thanks so much!:)
Afrodiddle
  • Afrodiddle
No problem.
Afrodiddle
  • Afrodiddle
Dont forget to close the question

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