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anonymous

  • one year ago

Let f(x) = 1/x and g(x) = x^2 - 9x. What two numbers are not in the domain of f^og? Separate your answers with a comma.

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  1. anonymous
    • one year ago
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    Can someone help me with this?

  2. welshfella
    • one year ago
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    Hint a denominator cannot be zero

  3. welshfella
    • one year ago
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    f^og = 1 / (x^2 - 9x)

  4. welshfella
    • one year ago
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    so you need to find values of x which will make x ^2 - 9x = 0

  5. welshfella
    • one year ago
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    solve x^2 - 9x = 0

  6. anonymous
    • one year ago
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    Sorry I can't figure this out

  7. welshfella
    • one year ago
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    can you factor x^2 - 9x what is common to x^2 and 9x ?

  8. welshfella
    • one year ago
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    what is in x^2 and 9 x ?

  9. anonymous
    • one year ago
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    ....x?

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