Question

If f(x) = x-1/x+1 is invertible function​

Answer 1

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Answer 2

Answer:

y = (x-1)/(x+1)

=> xy+y = x-1

=> xy - x + y+1 = 0

=> x(y-1) = -(y+1)

=> x = (y+1)/(1-y)

=> f^-(x) = (x+1)/(1-x)