Itsskoki
Itsskoki Itsskoki
  • 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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HAPPYCAMPERXD
HAPPYCAMPERXD HAPPYCAMPERXD
  • 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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