Functions The graph of f (x) = x 2 is the same as the graph of y = x 2. Writing graphs as functions in the form f (x) is useful when applying translations and reflections to graphs.

Armen Edigarian, Jan Wiegerinck, The Pluripolar Hull of the Graph of A Holomorphic Function with Polar Singularities, Indiana University Mathematics Journal, Vol. 52, No. 6 (2003), pp. 1663-1680 ...