Mathematical term for a constant factor multiplying a variable or term, e.g., in polynomials or equations.
The coefficient of x in this quadratic equation is 2.
The coefficient in this expression is 3.
coefficient; factor; proportional constant; modulus
In physics and chemistry, a constant that relates two quantities, such as a coefficient of friction, expansion, or absorption.
The smaller the coefficient of friction, the more slippery it is.
Please look up the thermal expansion coefficient of this material.
We determined the friction coefficient of this material through an experiment.
This material has a high coefficient of thermal conductivity.
指数 means an exponent or index (the power a number is raised to), whereas 係数 is a multiplicative factor in front of a term, so the two are easily confused despite both ending in 数.
係数 (coefficient) shares the ending 数 with 関数 and appears in the same equations, but a coefficient is a fixed multiplying number, not a function itself.
From 係 (relation, connection) + 数 (number). A relatively modern coinage for the mathematical concept of a coefficient.
coefficient of restitution