What is the inverse function of F(x) = (7/x) - 3 F(x)=(7x)−3?
1 Answer
Oct 31, 2015
Explanation:
To invert an (invertible!) function
-
Introduce a dependent variable
yy defined by the expression of the function in the independent variablexx :
y:=f(x) . -
Switch the roles of the dependent variable
x and the independent variabley , trying to expressx as a function ofy . That function is called inverse function off and it's denoted byf^{-1} :
x=f^{-1}(y)
In our specific case,
and now we solve for
We conclude that the inverse function of