amyaLerajone3s amyaLerajone3s
  • 25-11-2016
  • Mathematics
contestada

find the formula for df^-1/dx.

f(x)=(7-x)^3

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MissPhiladelphia
MissPhiladelphia MissPhiladelphia
  • 26-11-2016
Here is the equation to solve the problem above:

f(x) = (7-x)^3
y = (7-x)^3

switch y and x
 x = (7 - y)^3
 
third root of x = 7 - y
-y = 3rootx - 7
 
so:f′(x)=3^√x−7
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