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NatalieLove

  • 4 years ago

please dont solve help on the first step: Let f(x) = x2 – 81. Find f–1(x).

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  1. moneybird
    • 4 years ago
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    y = x^2 - 81 x = y^2 - 81 plus/minus sqrt(x + 81) = y

  2. moneybird
    • 4 years ago
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    \[ f^{-1} = \pm \sqrt{x+81}\]

  3. NatalieLove
    • 4 years ago
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    the answer is: f^1=+-√x+81

  4. NatalieLove
    • 4 years ago
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