SOLUTION: Given f(x)= √(x-4), determine f^-1(x)

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Question 164401: Given f(x)= √(x-4), determine f^-1(x)
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!

To find the inverse, first change to x,y notation.
y=sqrt%28x-4%29
Then interchange the positions of x and y and solve for y.
highlight%28x%29=sqrt%28highlight%28y%29-4%29
x%5E2=y-4
y=x%5E2%2B4
The solution for the new y is the inverse function.
f%5E%28-1%29%28x%29=x%5E2%2B4