SOLUTION: Find symbolic representation for f power -1(x) f(x)=sq rt x+6

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Question 789057: Find symbolic representation for f power -1(x)
f(x)=sq rt x+6
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
Find symbolic representation for f power -1(x)
f(x)=sqrt(x+6)
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1st: Interchange x and y to get:
x = sqrt(y+6)
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2nd: Solve for "y":
Square both sides to get:
y+6 = x^2
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Then y = x^2 - 6
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f^-1(x) = x^2-6
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Cheers,
Stan H.
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