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10-08-2017
Mathematics

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Given the function f(x) = 3^x, find the value of f^−1=(27)

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10-08-2017

f(x)=27 when x=9. The point is then (9, 27). If we switch places with x and y, we get (27, 9). f-1(27) = 9
the inverse function of f(x) is f-1(x) = (1/3)(x). Now you can find the answer, by substituting 27 into the formula for inverse.

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