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alienshe

  • 2 years ago

I'm trying to find the inverse of an equation and I'm not sure what to do next. http://oi43.tinypic.com/xldkhu.jpg

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  1. hartnn
    • 2 years ago
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    how u got x= 3ln y ?

  2. hartnn
    • 2 years ago
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    f(x) = 3+ ln x y= 3+ ln x interchange 'x' and 'y' x = 3+ ln y can u try to isolate 'y' from here ?

  3. alienshe
    • 2 years ago
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    (I'm just a tard who makes mistakes too often on her math homework...) Right now I have x-3=lny.

  4. alienshe
    • 2 years ago
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    Not sure what to do now

  5. hartnn
    • 2 years ago
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    you are correct till that step! now use this : \(\large a= \ln b \implies e^a = b\) from the definition , so what about (x-3) = ln y ?

  6. alienshe
    • 2 years ago
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    \[y=e ^{x-3}\]

  7. alienshe
    • 2 years ago
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    Is that the right answer?

  8. hartnn
    • 2 years ago
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    absolutely! thats your inverse function :)

  9. alienshe
    • 2 years ago
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    Thanks for the help! :)

  10. hartnn
    • 2 years ago
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    welcome ^_^

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