One of the mysteries of the English language finally explained.
noun
1Mathematics
A statement that the values of two mathematical expressions are equal (indicated by the sign =).- ‘When I pressed him to write an equation expressing the value for a, he insisted that he would need a symbol for within.’
- ‘Lagrange's main object was to find out why cubic and quartic equations could be solved algebraically.’
- ‘The first person known to have solved cubic equations algebraically was del Ferro but he told nobody of his achievement.’
- ‘The movement associated with each mode can be expressed by the motion equation for a single degree-of-freedom system.’
- ‘An encryption algorithm is a mathematical equation containing the message being encrypted or decrypted.’
- ‘The sections on equations cover quadratic equations where he discusses two solutions.’
- ‘These laws are very precise and can be expressed by exact mathematical equations.’
- ‘Now express the pattern as a mathematical equation.’
- ‘He replaced the differential operator d/dx by a variable p transforming a differential equation into an algebraic equation.’
- ‘It also contains continued fractions, quadratic equations, sums of power series and a table of sines.’
mathematical problem, sum, calculation, questionView synonyms2mass noun The process of equating one thing with another.
‘the equation of science with objectivity’- ‘The simple equation of balancing caloric intake and exercise is the key to fitness.’
- ‘One-half of the general problem of stellar atmospheres revolves around the solution of the equation of radiative transfer.’
- ‘The facts reduce themselves to a terrible equation of time and consequence.’
- ‘I say two, because another managerial solution to this quandary is to work on the slightly simpler equation of four into three.’
- ‘I feel that I have developed some sort of equation with them.’
- ‘As relationships go, I realized this simple equation of life.’
- ‘And can you tell us, are you concerned about second-guessing on that whole equation?’
equating, equalization, identification, association, connection, likening, matchingView synonyms- 2.1the equation A situation in which several factors must be taken into account.‘money also came into the equation’
- ‘So the children issue doesn't really enter into the equation.’
- ‘The current price of oil, states the release, is a critical ingredient in the tourism industry and must be factored into the equation.’
- ‘It doesn't enter into the equation, because it's not part of the culture.’
- ‘In these and other ways, care theorists distance themselves from any simple equation of subjective hurt and moral claims.’
- ‘Another factor in the equation: Used equipment must compete with new equipment in the marketplace.’
- ‘The second part of that equation seems to have been abandoned by feminists early on.’
- ‘This deprivation of culture, of identity, is the missing link in Africa's development equation.’
- ‘So let me analyse the business element of that equation.’
- ‘Concern for life just does not belong in the profit/loss equation.’
- ‘Once all that is figured out, the most confusing factor in the equation must be pondered: playing time.’
- ‘The fact that he might have to do without doesn't enter into the equation for some in the animal protection industry.’
- ‘When pressure of competition was factored into the equation, the situation changed.’
- ‘We have explained the process of the enabling development equation.’
- ‘It was a simple and compelling equation: the bigger the wave the better your bottom-line.’
- ‘Food/energy balance is the simple equation of calories in/calories out.’
- ‘The perception of our success up to this point will be a critical part of that equation.’
- ‘Even on stark issues like abortion, there can be no simple equation between the church and any political program or party.’
- ‘Yet rising U.S. interest rates and a still-strong dollar must be factored into that equation.’
- ‘Even the simplest of pots was a chore and ‘position’ did not even enter into the equation.’
- ‘And the small matter of lost tax revenue doesn't enter into the equation at all, of course.’
the situation, the problem, the case, the question, the quandary, the predicamentView synonyms
3Chemistry
A symbolic representation of the changes which occur in a chemical reaction, expressed in terms of the formulae of the molecules or other species involved.- ‘The chemical equations for some reactions may have a lone reactant or a single product.’
- ‘I asked as I balanced a chemical equation and answered some questions.’
- ‘When hydrolysis occurs, we will write a chemical equation to describe it, and new species will be formed in solution.’
- ‘The isotopic data do not conform to a simple mixing equation.’
- ‘The final system is the aerobic system. aerobic meaning it requires oxygen as part of its chemical equation to function.’
Phrases
equation of the first (or second etc.) order
An equation involving only the first derivative, second derivative, etc.
- ‘He began mathematical research while still an undergraduate and his first paper, On the isoclinal lines of a differential equation of the first order was published in the Proceedings of The Royal Society of Edinburgh in 1903.’
- ‘Special attention should be drawn also to his little known pamphlet on regular point of linear differential equations of the second order used for a number of years in connection with one of his courses of lectures.’
- ‘His doctoral dissertation was on the theory of the propeller which led to his developing a theory of partial differential equations of the second order.’
- ‘This integral was introduced in a paper on differential equations of the second order which he wrote in 1870.’
- ‘He did this by using an indeterminate equation of the second order, Nx 2 + 1 = y 2, where N is the number whose square root is to be calculated.’
Origin
Late Middle English: from Latin aequatio(n-), from aequare ‘make equal’ (see equate).