If y = f(x) = (x+2)/(x-1) , x ne1 , then...

If y = f(x) = `(x+2)/(x-1) , x ne1` , then show that x = f(y) .

A

x=f(y)

B

f(1)=3

C

y increases with x for `x lt 1`

D

f is a rational function of x

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The correct Answer is:

A

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