Mathematical term for a constant factor multiplying a variable or term, e.g., in polynomials or equations.
この式の係数は3です。
The coefficient in this expression is 3.
The coefficient of x in this quadratic equation is 2.
coefficient; factor; proportional constant; modulus
In physics and chemistry, a constant that relates two quantities, such as a coefficient of friction, expansion, or absorption.
摩擦係数が小さいほど滑りやすい。
The smaller the coefficient of friction, the more slippery it is.
この材料の熱膨張係数を調べてください。
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.
coefficient unit; scale multiplier
coefficient
Gini coefficient
path coefficient
binomial coefficient
From 係 (relation, connection) + 数 (number). A relatively modern coinage for the mathematical concept of a coefficient.
reflection coefficient
coefficient of restitution