Question 896543: I really need help soon!
Given f(x) = 2x^3 - 7 find f^-1(x)
Answer by stanbon(75887)   (Show Source):
You can put this solution on YOUR website! Given f(x) = 2x^3 - 7 find f^-1(x)
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1st: Interchange x and y to get::
x = 2y^3 - 7
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2nd: Solve for "y":
2y^3 = x + 7
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y^3 = (x+7)/2
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y = [(x+7)/2]^(1/3
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That is f^-1(x)
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Cheers,
Stan H.
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