Section 1.3: Functions
Example Exercise
Example 10
Show that the function \(f : \mathbb{N} \to
\mathbb{N}\) given by \(f(1) = f(2) =
1\) and \(f(x) = x - 1\), for
every \(x > 2\), is onto but not
one-one.
Example 10
Show that the function \(f : \mathbb{N} \to
\mathbb{N}\) given by \(f(1) = f(2) =
1\) and \(f(x) = x - 1\), for
every \(x > 2\), is onto but not
one-one.