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anonymous

  • one year ago

I NEED HELP!!!! Confirm that f and g are inverses by showing that f(g(x)) = x and g(f(x)) = x. f(x) = quantity x minus nine divided by quantity x plus five. and g(x) = quantity negative seven x minus eight divided by quantity x minus one.

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  1. anonymous
    • one year ago
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  2. anonymous
    • one year ago
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    Sorry people, I just really need help!!

  3. anonymous
    • one year ago
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    Could you possibly take a picture of the equation?

  4. anonymous
    • one year ago
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    No it was written out..

  5. myininaya
    • one year ago
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    \[f(x)=\frac{x-9}{x+5} , g(x)=\frac{-7x-8}{x-1}\] is this what you mean?

  6. myininaya
    • one year ago
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    don't think you are going to be able to confirm what you want to with that f and g

  7. Vocaloid
    • one year ago
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    actually, it's possible, it just requires a lot of algebraic simplification to find f(g(x)), take the expression for g(x) and substitute it in for x in f(x), and after simplifying you should get x do the same thing for g(f(x))

  8. Vocaloid
    • one year ago
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    please tag me if you need to see the numbers worked out

  9. myininaya
    • one year ago
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    Yes I know it is possible to find f(g(x)) and g(f(x)) but the person will not be able to confirm what they wanted @Vocaloid

  10. myininaya
    • one year ago
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    I think there was a type-o since the question says confirm which means they are indeed inverses but these are not inverses.

  11. Vocaloid
    • one year ago
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    @myininaya Oh, I see, well in that case, I stand corrected.

  12. myininaya
    • one year ago
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    But the person can reach this conclusion by doing that whole plugin in thing and clearing the compound fractions as you mentioned

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