If f(x) = x+1/x-1 , then the value of f(f(f(x))) is —
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If f(x) = x+1/x-1 , then the value of f(f(f(x))) is —

(A) x-1/x+1

(B) 1

(C) x+1/x-1

(D) x

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Explanation 

f(f(x)) = (x+1/x-1)+1/(x+1/x-1)-1 = x

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

So, The correct option of this question is (C).

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