Informal abbreviation for coefficient, a number or symbol multiplying a variable in an algebraic expression.
Shortened form of coefficient (from Latin co- + efficers, to work together). The abbreviation 'coef' is used in mathematics and programming as shorthand.
In mathematics classrooms and programming forums, 'coef' is used so frequently that many students never learn the full word 'coefficient,' showing how technical jargon evolves through abbreviation in digital spaces.
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