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Tomfoolery
Tomfoolery Tomfoolery
  • 15-04-2015
  • Mathematics
Answered

Find the inverse function of f(x)= \(\sqrt{x+4} +7\)

Verified Answer :

konrad509
konrad509 konrad509
  • 15-04-2015

\(f(x)=\sqrt{x+4}+7\\ y=\sqrt{x+4}+7\\ y-7=\sqrt{x+4}\\ (y-7)^2=x+4\\ x=(y-7)^2-4\\ f^{-1}(x)=(x-7)^2-4\ \text{ for } x\geq4\)

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