# 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.
References in periodicals archive ?
The corresponding Euler-Lagrange's equation and energy - momentum tensors are found on the basis of the covariant Noether's identities.
Equation 4 had low average deviation, high accuracy and precision, with the greater error proportion of the model focusing on RE, which in turn demonstrated a well-controlled model.
In another methodology, the cubic B-spline was applied for obtaining numerical results of SRLWE after discretizing the equation reported by (Mittal and Tripathi, 2015).
Please note," she remarks, "that this equation is both numerically correct--as confirmed by our checker--and end-to-end palindromical.
Section 2 presents the governing equations of one-dimensional nonlocal nonlinear elasticity theory and gives the equation of motion in dimensionless quantities for two distinct forms of the kernel function.
While this claim is true, it needs to be noted that the zero in this equation is a square null matrix rather than a scalar.
They often wonder why they have to check their answer in the original equation, especially when they square both sides of an equation containing radicals.
The study found a high prevalence of mild renal dysfunction (stage 2 chronic kidney disease) in 54%-59% of women, depending on the equation used.
Let u(x, t) = U([xi]), [xi] = x - Vt be its travelling wave solutions, where the wave velocity V is a coefficient to be determined later, then equation (2) can be simplified to a nonlinear ODE
An Introduction To Partial Differential Equations With MATLAB, second edition
Using this notation and taking into account that in the surrounding spacetime of the material particle there is an electric current j, as given by equation (242), the energy-momentum tensor [19-21] of the electromagnetic field is given by the tensor

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