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Andru [333]
3 years ago
10

For which function is f(x) equal to f^-1(x)?

Mathematics
2 answers:
Maru [420]3 years ago
6 0

Answer:

It’s c f(x)=x+1/x-1

Step-by-step explanation:


Ilia_Sergeevich [38]3 years ago
4 0
We will find the inverse of the given functions:
 y = x + 2 / x-2
 (x-2) y = x + 2
 -2y + xy = x + 2
 -2y + xy = x + 2
 x (y - 1) = 2 + 2y
 x (y - 1) = 2 (y + 1)
 x = 2 (y + 1) / (y - 1)
 f (x) ^ - 1 = 2 (x + 1) / (x - 1)
 The inverse is different.
 f (x) = x + 1 / x-1
 
y = x + 1 / x-1
 (x-1) y = x + 1
 -y + xy = x + 1
 x (y - 1) = 1 + y
 x (y - 1) = (y + 1)
 x = (y + 1) / (y - 1)
 f (x) ^ - 1 = (x + 1) / (x - 1)
 The inverse is the same.
 Answer:
 
f (x) = x + 1 / x-1
 
f (x) ^ - 1 = (x + 1) / (x - 1)
 f (x) = f (x) ^ - 1
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