BUILT-IN MATHEMATICA SYMBOL

NumericFunction

NumericFunction
is an attribute that can be assigned to a symbol f to indicate that should be considered a numeric quantity whenever all the are numeric quantities.

Details 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 Examples open all close all

Basic Examples (1)Basic Examples (1)

Exp has the NumericFunction attribute:

Out[1]=

When Exp has an argument that is a number, constant, or numeric, the result is numeric:

Out[2]=

In most cases when NumericQ[expr] gives True, then N[expr] yields an explicit number:

Out[3]=

Scope (2)Scope (2)

Applications (1)Applications (1)

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See Also See Also

NumericQ NHoldAll N

Tutorials Tutorials

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