Question 703357: f(x) = x+3
f^-1(x) =
Answer by Nfrey78(18)   (Show Source):
You can put this solution on YOUR website! f(x) = x+3
f^-1(x) =
We are given a function and we want to find the inverse function f^-1(x)
The steps to finding any inverse function are quite simple
First rewrite using y instead of f(x) (makes it easier to manipulate the variables)
y = x + 3
Second step switch all instances of y with x and all x's with y's
x = y + 3
Third solve for the new y
y = x - 3
This should make sense. The inverse function means it does the opposite or will undo the first function. The opposite of adding 3 is subtracting 3.
So f^-1(x) = x - 3
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