1.

If `x(x)=(x+1)/(x-1)`, then the value of `f(f(f(x)))` is :A. `(x-1)/(x+1)`B. 1C. `(x+1)/(x-1)`D. x

Answer» Correct Answer - C
`f(f(x))=(((x+1)/(x-1))+1)/(((x+1)/(x-1))-1)=x`
`f(f(f(x)))= (x+1)/(x-1)`.


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