SOLUTION: f(x)=4/(x+2) find inverse function f^-1(x)

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Question 760379: f(x)=4/(x+2) find inverse function f^-1(x)
Answer by MathLover1(20850) About Me  (Show Source):
You can put this solution on YOUR website!

f%28x%29=4%2F%28x%2B2%29 find inverse function f%5E-1%28x%29
f%28x%29=y
y=4%2F%28x%2B2%29....switch x and y
x=4%2F%28y%2B2%29.....solve for y
%28y%2B2%29=4%2Fx
y=4%2Fx-2
so,f%5E-1%28x%29=4%2Fx-2