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radh

  • 3 years ago

Find the inverse of y=2√(x+3). Thanks!

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  1. nubeer
    • 3 years ago
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    y = f(x) square both sides. y^2=4(x+3). now u have to make the x alone y^2 / 4 =x+3 (y^2 / 4 ) - 3 = x \[f^{-1}(x)\] = (x^2/4) - 3

  2. radh
    • 3 years ago
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    thanks! I wasn't sure how to get rid of the square root. :)

  3. nubeer
    • 3 years ago
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    no problem at all. :) just square whenever u vanish the square root.

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