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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.

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  1. anonymous
    • one year ago
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    can you help ?

  2. Afrodiddle
    • one year ago
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    This is a rational function f(x) = 7/x-a

  3. anonymous
    • one year ago
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    thats all?

  4. Afrodiddle
    • one year ago
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    I gave you an example. Make your own fill in the blanks :P \[f(x) = \frac{ blank }{ x-a }\]

  5. anonymous
    • one year ago
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    am i supposed to plug in numbers for a?

  6. Afrodiddle
    • one year ago
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    Does it state so? then yes.

  7. Afrodiddle
    • one year ago
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    the domain is all real numbers except a

  8. anonymous
    • one year ago
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    so i can have f(x)= 5/x-a?

  9. Afrodiddle
    • one year ago
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    Yes.

  10. Afrodiddle
    • one year ago
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    ( - ∞ , a ) U ( a , + ∞ ) is the interval notation of a domain.

  11. anonymous
    • one year ago
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    and how can i get the interval and set notation?

  12. Afrodiddle
    • one year ago
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    { x ϵ ℝ | x ≠ a } Is the set notation.

  13. Afrodiddle
    • one year ago
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    as I said, the domain is all real numbers except a.

  14. anonymous
    • one year ago
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    okay thanks so much!:)

  15. Afrodiddle
    • one year ago
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    No problem.

  16. Afrodiddle
    • one year ago
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    Dont forget to close the question

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