Answered

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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=

Sagot :

[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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