Question: Let f: W W be defined as f(n) = n - 1, if n is odd and f(n) = n + 1, if n

Let f: W W be defined as f(n) = n - 1,

Let f: W W be defined as f(n) = n - 1, if n is odd and f(n) = n + 1, if n is even. Show that f is invertible. Find the inverse of f. Here, W is the set of all whole numbers. If f: R R is defined by f(x) = x - 3x + 2, find f(f(x)).

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