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OpenStudy (anonymous):
f(x)=1/2x+5, find a formula for the inverse function. is it f^-1=(y-5)*2??
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OpenStudy (anonymous):
Is it? \[f(x) = \frac{1}{2}x + 5\]
OpenStudy (anonymous):
Yes you are right @hoya
OpenStudy (anonymous):
What you can do more is to replace by y with x in the final answer: \[f^{-1}(x) = 2 (x -5) = 2x - 10\]
OpenStudy (anonymous):
thank you.
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