function notation
a way to name a rule and its input: f(x) is read "f of x," and f(3) means the output when x = 3.
Example
If p(x) = x^2 + 1, then p(3) = 3^2 + 1 = 10.
In Spanish
function notation — una forma de nombrar una regla y su entrada: f(x) se lee "f de x" y f(3) es la salida cuando x = 3.
Si p(x) = x^2 + 1, entonces p(3) = 3^2 + 1 = 10.