# equation

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## equation

a means of portraying arithmetically the relationship between VARIABLES. For example, the equation: C = 1,000 + 0.9Y suggests a particular relationship between consumer expenditure (C) and disposable income (Y), which would be true for certain values of C and Y (such as 10,000 and 10,000 respectively) but not true of other values of C and Y (such as 6,000 and 10,000 respectively). Equations are generally written with a two-bar equals sign (=), with the value to the left of the sign being equal to the value to the right of the sign. The validity of an equation can be tested statistically by collecting paired observations of the variables involved and testing whether or not these observations conform with the equation formulated. See IDENTITY.
Collins Dictionary of Economics, 4th ed. © C. Pass, B. Lowes, L. Davies 2005
References in periodicals archive ?
Furthermore, the equation of motion of the current density is
The equation of motion of the charges in a magnetic field h directed perpendicular to the plane is given by
Equation of motion expressed in terms of the dimensionless quantities [7].
The main goal of this work is to derive the equation of motion in fractional form for the single fluid from the fractional Lagrangian density and from the fractional Hamiltonian density also to determine the energy-stress tensor in fractional form also, by using Caputo's fractional derivative.
When w is not zero, the equation of motion of pipe contains the Coriolis term, which renders classical normal modes impossible, as seen in Figures 4(b) and 5(b).
According to the Hamilton principle, the differential equation of motion for the cable-beam coupling structure is [14]
The equation of motion of centre of mass point can be expressed by (1) provided the external force is parallel to the spin direction.
The differential equation of motion in three dimensional coordinate's vibration of a pipe conveying a moving fluid was used to take into account the presence of motion constraints.
Vlase, "Method of eliminating lagrangian multipliers from the equation of motion of interconnected mechanical system," Journal of Applied Mechanics, vol.
Randall presents a graduate-level introductory overview of the global circulation of the atmosphere for students who have completed a graduate course in atmospheric dynamics and are familiar with such concepts as the equation of motion, the approximate hydrostatic and geostrophic balances, potential temperatures, vorticity, pressure coordinates, and planetary waves.

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