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Solving simple equations
Published in John Bird, Bird's Basic Engineering Mathematics, 2021
In mathematics, engineering and science, formulae are used to relate physical quantities to each other. They provide rules so that if we know the values of certain quantities, we can calculate the values of others. Equations occur in all branches of engineering. Simple equations always involve one unknown quantity which we try to find when we solve the equation. In reality, we all solve simple equations in our heads all the time without even noticing it. If, for example, you have bought two CDs, for the same price, and a DVD, and know that you spent £25 in total and that the DVD was £11, then you actually solve the linear equation 2x + 11 = 25 to find out that the price of each CD was £7. It is probably true to say that there is no branch of engineering, physics, economics, chemistry and computer science which does not require the solution of simple equations. The ability to solve simple equations is another stepping stone on the way to having confidence to handle engineering mathematics.
Solving simple equations
Published in John Bird, Basic Engineering Mathematics, 2017
In mathematics, engineering and science, formulae are used to relate physical quantities to each other. They provide rules so that if we know the values of certain quantities, we can calculate the values of others. Equations occur in all branches of engineering. Simple equations always involve one unknown quantity which we try to find when we solve the equation. In reality, we all solve simple equations in our heads all the time without even noticing it. If, for example, you have bought two CDs, for the same price, and a DVD, and know that you spent £25 in total and that the DVD was £11, then you actually solve the linear equation 2x $ \boldsymbol{x} $ + 11 = 25 to find out that the price of each CD was £7. It is probably true to say that there is no branch of engineering, physics, economics, chemistry and computer science which does not require the solution of simple equations. The ability to solve simple equations is another stepping stone on the way to having confidence to handle engineering mathematics.
Software Program
Published in Jonathan F. Hutchings, Project Scheduling Handbook, 2003
A formula is a mathematical instruction to the computer to perform a calculation or series of calculations. We use operators to specify the calculations to be performed, and their order of precedence or sequence. The software uses operators in numeric, string, and logical formulas. Just as ranges are the macroactivity of cells, operators are the macroactivity of formulas. You begin to see now how our building blocks work. We are structuring circles within circles. In this way, our network schedule will have all levels of data from the minute tasks and work items right on up to the major phases of activities, which gives the computer the factoring linkage necessary for program logic. Time manipulation is achieved in the network schedule through the use of tools such as string operators.
Morphologic for knowledge dynamics: revision, fusion and abduction
Published in Journal of Applied Non-Classical Logics, 2023
Isabelle Bloch, Jérôme Lang, Ramón Pino Pérez, Carlos Uzcátegui
Here propositional logic is considered, and propositional formulas are used to encode either pieces of knowledge (which may be generic, for instance integrity constraints, or factual such as observations), or subjective items such as beliefs or preferences. Such formulas are then used for complex reasoning or decision-making tasks.