Let f(x)=1/1-x. Then, {f ∘(f ∘ f)}(x) (a) x for all x ∈ R (b) x for all x ∈ R-{1} (c) x for all x...

Let f(x)=1/1-x. Then, {f ∘(f ∘ f)}(x)
(a) x for all x ∈ R
(b) x for all x ∈ R-{1}
(c) x for all x ∈ R-{0,1}
(d) none of these

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