Coefficient
multiplicative factor involved in some term of a polynomial, a series, or an expression / From Wikipedia, the free encyclopedia
For other uses, see Coefficient (disambiguation).
In mathematics, a coefficient is a constant multiplicative factor of a certain object. For example, the coefficient in 9x2 is 9. A coefficient can also be a variable such as , and .[1][2]
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The object can be such things as a variable, a vector, a function, etc. In some cases, the objects and the coefficients are indexed similarly, leading to expressions such as:
where an is the coefficient of the variable xn for each n = 1, 2, 3, …[3]