Consider f: R+→[4,∞] given by f(x)=x2+4. Show that f is invertible with f-1 of f given by f-1(x)=x-4, where R+ is the set of all non-negative real numbers.

Consider f: $R^{+} \to [4, \infty]$ given by f(x)= $x^{2} + 4$ . Show that f is invertible with $f^{- 1}$ of f given by $f^{- 1} (x) = \sqrt{x - 4}$ , where $R^{+}$ is the set of all non-negative real numbers.

Match the items on the right to the items on the left.