Együttható

Együttható is a Hungarian term that translates to "coefficient" in English. In mathematics and science, a coefficient is a numerical or symbolic factor that multiplies a variable in an algebraic expression or equation. For example, in the expression 3x², the number 3 is the coefficient of the variable x². Similarly, in the equation y = 2x + 5, the number 2 is the coefficient of the variable x.

Coefficients play a crucial role in defining the behavior and properties of mathematical models and scientific laws. They can represent physical quantities, relationships between variables, or scaling factors. The value of a coefficient can significantly alter the outcome of an equation or the interpretation of a phenomenon. For instance, in physics, coefficients of friction, thermal expansion, or elasticity describe the material properties and how systems respond to external forces or conditions.

In statistics, coefficients are used in regression analysis to quantify the relationship between independent and dependent variables. The sign and magnitude of these coefficients indicate the direction and strength of the association. Understanding coefficients is fundamental to solving equations, analyzing data, and building predictive models across various disciplines.