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anonymous

  • one year ago

Let f(x) = x2 − 81. Find f−1(x).

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  1. anonymous
    • one year ago
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    y = x² - 81 Start by switching x and y. Then solve for the "new" x.

  2. anonymous
    • one year ago
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    It does not have an inverse. Or at lest its inverse is not a function

  3. anonymous
    • one year ago
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    @sourwing is correct. are you restricting the domain?

  4. anonymous
    • one year ago
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    I have a few options though... im confused

  5. anonymous
    • one year ago
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    what are the options?

  6. anonymous
    • one year ago
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    |dw:1433113222980:dw|

  7. anonymous
    • one year ago
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    ok. you'll be fine if you go through the usual process. y = x² - 81 Start by switching the x and y

  8. anonymous
    • one year ago
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    Solve this for y |dw:1433113785872:dw|

  9. anonymous
    • one year ago
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    thanks

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spraguer (Moderator)
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