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Rudy Ali
Mathematics
10 September, 04:09
Let f (x) = x2 - 16. find f-1 (x). open study
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Koba
10 September, 04:27
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+√ (x+16) = f^-1 (x).
Switch out f (x) with y
Swap y and x, so it's x=y^2-16
Add 16 to both sides. x+16=y^2
Find the square root of both sides ...
√x+16 = √y^2
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Daria
10 September, 04:29
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Okay, so first you make f (x) = y and switch x and y. So the equation becomes:
x = y^2 - 16
The next step is to get y by itself. So first you add 16 to both sides:
x + 16 = y^2
Now you square root everything, so the final answer is going to be:
the square root of x + 4 = y
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