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.

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Basic Examples (1)Basic Examples (1)

Exp has the NumericFunction attribute:

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

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

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