ChloeMadelineJones ChloeMadelineJones

26-03-2017
Mathematics

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Given the function f(x) = 3^x , find the value of f^-1(27) .
= 1
= 3
= 9
= 81

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DWS0810 DWS0810

26-03-2017

Answer is 3. You will have to find f^-1(x) before substituting 27 into x of f^-1(x). Apply log concept too.

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