Description

SelectFree[expr, a, b, ...] is equivalent to Select[expr, FreeQ2[#, {a,b, ...}]&], except the special cases: SelectFree[a, b] returns a and SelectFree[a,a] returns 1 (where a is not a product or a sum).

SelectFree is equivalent to Select1.

See also: FreeQ2, SelectNotFree.

Examples

The FeynCalc Book

SD

SelectNotFree