NumericQ
NumericQ[
expr
] gives True if expr is a numeric quantity, and False otherwise.
An expression is considered a numeric quantity if it is either an explicit number or a mathematical constant such as Pi, or is a function all of whose arguments are numeric quantities.
In most cases, NumericQ[
expr
] gives True whenever N[
expr
] would yield an explicit number.
See The Mathematica Book on the web:Section 2.3.5 and Section 3.1.2.
See also: NumberQ.
Further Examples
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