LorissaH380965 LorissaH380965
  • 03-11-2022
  • Mathematics
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If f(x) = x² + 7, what is the equation for f¹(x)?

If fx x 7 what is the equation for fx class=

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AhaanC415261 AhaanC415261
  • 03-11-2022
[tex]\begin{gathered} f(x)=x^2+7 \\ y=x^2+7 \\ x=y^2+7 \\ y^2=x\text{ - }7 \\ y=\pm\sqrt{x\text{ -7}} \\ f^{\text{ -1}}(x)=\pm\sqrt{x\text{ -7}}\text{ } \\ \end{gathered}[/tex]

Option A is correc.

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