Find more facts and information on our topic page about
equation
equation
equation Mathematical statement of
variables, equal to some subset of all possible variables. The equation x
2 = 8 − 2x is true only for certain values (solutions) of x (x = 2
and x = −4). This type of equation is contrasted with an identity, such as (x+2)
2 = x
2 + 4x + 4, which is true for all values of
x. Equations are said to be linear,
quadratic, cubic, quartic, etc., according to whether their degree (the highest power of the variable) is 1, 2, 3, 4, etc. See also
simultaneous equations
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Equations shape AWG waveforms.
Magazine article from: Test & Measurement World; 5/1/2001; ; 700+ words
; ...software to write the equations. Equation-writing software...have built-in equation functions and a...creates voltages from equations. Built-in functions...create waveforms from equations. Once you write the waveform equation, you need to download...
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Equations for the entire soil-water characteristic curve of a volume change soil.(Report)
Magazine article from: Canadian Geotechnical Journal; 4/1/2008; ; 700+ words
; ...curve-fitting equation. The two equations are used to best...deux nouvelles equations pour la courbe...sol-eau. Une equation a des parameters...developpee comme une equation de lissage de...conventionnel. Les deux equations sont utilisees...
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Generalized analytic equations for strip transmission lines. (technical feature)
Magazine article from: Microwave Journal; 11/1/1989; ; 700+ words
; ...a result the present equations are useful in any range of Wi/hi. These equations have been verified against...Synthesis An exact synthesis equation for an asymmetric offset...following quadratic equation. For a given coupling...The above synthesis equations are accurate for all...
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Romancing the equations
Magazine article from: Natural History; 11/1/1997; ; 700+ words
; ...In pure math, an equation simply needs to have...right side, and the equation need not apply to the...universe, however, equations connect measured quantities...If the mere sight of equations upsets you, consider...example, the following equation-known as a Maxwellian...
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An equation involving the F.Smarandache multiplicative function SM(n).(Report)
Magazine article from: Scientia Magna; 1/1/2008; ; 700+ words
; ...positive integer solutions of the equation [summation over d/n] SM(d...set](n), and prove that this equation has only one positive integer solution...Jianbin studied the solutions of an equation involving the F.Smarandache multiplicative...
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Differential Equations For Dummies - Available Now.
M2 Presswire; 7/11/2008; 700+ words
; ...college differential equations course and is an ideal...improve their differential equation-solving skills and...First Order Differential Equations. Chapter 1: Welcome...Linear Differential Equations. Chapter 13: Discovering...Online Differential Equation Tutorials. Chapter...
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Constituent boussinesq equations for waves and currents
Magazine article from: Journal of Physical Oceanography; 3/1/2001; ; 700+ words
; ...The Boussinesq long-wave equations in constituent form are generalized...time-dependent governing equations. This advantage is retained...inversion of the 3D elliptic equation for pressure in the weakly...the constituent Boussinesq equations for rotational motion will...
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On conservation equations in oceanography: How accurate are Boussinesq ocean models?
Magazine article from: Journal of Physical Oceanography; 5/1/2002; ; 700+ words
; ...the mass conservation equation, the equation for potential temperature...term in the momentum equations. However, their work...consider the averaged equations in a turbulent fluid...potential temperature equation that arises from using...
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Incredible Equations Develop Incredible Number Sense.
Magazine article from: Teaching Children Mathematics; 11/1/2000; ; 700+ words
; ...2 + 5 = 22 This equation involved many of...operations into her equation. Creating Incredible Equations helped Sandy learn...writes the resulting equations for all to see...on each recorded equation, the teacher repeats...
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Revised standardized equation for hydrogen gas densities for fuel consumption applications.
Magazine article from: Journal of Research of the National Institute of Standards and Technology; 11/1/2008; ; 700+ words
; ...calculate consumption. Equations of state for calculating...inconvenient to use since the equation must be solved in an...orthohydrogen; these equations will be fully documented elsewhere (5). These equations replace those presented...the normal hydrogen equation of state from 0.2...
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Equations, Chemical
Book article from: Chemistry: Foundations and Applications
...It is why chemical equations must be balanced. Atoms...on each side of the equation must be the same. Coefficients...are used to balance equations. Many equations can...O Balanced chemical equations provide a significant...information. Consider the equation for photosynthesis...
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Equation, Chemical
Encyclopedia entry from: The Gale Encyclopedia of Science
Equation, Chemical Conventions...Applications Chemical equations reveal the chemical...and derive chemical equations from them, because...before the correct equations can be specified...look at a chemical equation and know what it...
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Simultaneous Equation Bias
Encyclopedia entry from: International Encyclopedia of the Social Sciences
...Equation Bias Simultaneous equation bias is a fundamental problem...regression applied to a single equation from a system of simultaneous equations will produce biased, that...parameters from a simultaneous equation model requires advanced methods...
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Difference Equations
Encyclopedia entry from: International Encyclopedia of the Social Sciences
...order) difference equation is x t + 1 = f ( x t ). Difference equations of higher order...order difference equation has the general...system of difference equations is easily formulated...1 the difference equation is m 1 ( t + 1...
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Differential Equations
Encyclopedia entry from: International Encyclopedia of the Social Sciences
...Differential equations of higher order...differential equation has the general...deterministic difference equation). Differential equations can also treat...systems of such equations can always be...differential equation (which is the...
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