Question

If f(x) = $1-\frac{1}{x}$, then f(f($\frac{1}{x}$))
(a) $\frac{1}{x}$
(b) $\frac{1}{1+x}$
(c) $\frac{x}{x-1}$
(d) $\frac{1}{x-1}$

Answer 1

Answer is (c) $\frac{x}{x-1}$