NumericFunction
is an attribute that can be assigned to a symbol f to indicate that f[arg1,arg2,…] should be considered a numeric quantity whenever all the argi are numeric quantities.
Details

- Most standard built‐in mathematical functions have the attribute NumericFunction.
- NumericQ checks the NumericFunction attribute of every function it encounters.
- If you assign the attribute NumericFunction to a function that does not yield numerical values, then NumericQ will give misleading results.
Examples
open all close allBasic Examples (1)
Scope (2)
Applications (1)
Introduced in 1996
(3.0)