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slavikrds [6]
2 years ago
11

Does anyone know how to do this? I’m lost

Mathematics
1 answer:
Nataly [62]2 years ago
7 0

Answer: B

Step-by-step explanation:

To find the inverse function, you switch x with y and y with x. Then, you solve for y.

y=(x-1)^{2} -4                                  [switch x with y, and y with x]                        

x=(y-1)^2-4                                  [add both sides by 4]

x+4=(y-1)^2                                  [square root both sides]

\sqrt{x+4} =y-1                                    [add both sides by 1]

\sqrt{x+4} +1=y

f^-^1(x)=1+\sqrt{x+4}

Now that we know the inverse function, we can actually tell that the answer is B. We know this because of the restriction that f(x) is x≤1. This makes it positive, and B the answer.

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