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Algebra mathematical equations

The units of a measurement are an integral part of the measurement. In many ways, they may be treated as algebraic quantities, like x and y in mathematical equations. You must always state the units when making measurements and calculations. [Pg.17]

The second section, on computer algebra, details chemical applications whose emphasis is on the mathematical nature of chemistry. As chemical theories become increasingly complex, the mathematical equations have become more difficult to apply. Symbolic processing simplifies the construction of mathematical descriptions of chemical phenomena and helps chemists apply numerical techniques to simulate chemical systems. Not only does computer algebra help with complex equations, but the techniques can also help students learn how to manipulate mathematical structures. [Pg.403]

This algebraic system is diagrammed in Figure 1.2. The input to the system is the independent variable x. The output from the system is the dependent variable y. The transform that relates the output to the input is the well defined mathematical relationship given in Equation 1.1. The mathematical equation transforms a given value of the input, x, into an output value, y. If x = 0, then y = 2. If x = 5, then y = 7, and so on. In this simple system, the transform is known with certainty. [Pg.2]

The mathematical equations for this imperfectly mixed model consist of 12 differential equations similar to equations (l)-(4), four for each of the three CSTR s. At steady state, they reduce to 12 non-linear algebraic equations which are solved numerically in order to calculate the dependence of initiator consumption on polymerization temperature. An overall balance reveals that the monomer conversion and polymer production rate are still given by equations (5) and (8), while the initiator consumption is affected by the temperature and radicals distribution in the three CSTR s, so that equations (7) and (9) become much more complex. [Pg.598]

Kirchhoff s current law states that the algebraic sum of the currents entering a node is equal to the algebraic sum of the currents leaving the node. The principle schematic of KCL is shown in Figure 2.4, and the mathematical equation that describes KCL in Figure 2.4 is... [Pg.42]

Basic math and algebra skills. Chemistry requires calculations and the manipulation of mathematical equations to solve problems. Review your algebra skills before starting the chemistry lessons and you will find that chemistry will be easier to comprehend. [Pg.7]

A set of statistical methods using a mathematical equation to model the relationship between an observed or measured response and one or more predictor variables. The goal of this analysis is twofold modelling and predicting. The relationship is described in algebraic form as ... [Pg.62]

Symbolic mathematics, calculus, algebra, differential equations, statistics, geometry, and transforms... [Pg.182]

Theoretical approach It is quite often the case that we have to design the control system for a chemical process before the process has been constructed. In such a case we cannot rely on the experimental procedure, and we need a different representation of the chemical process in order to study its dynamic behavior. This representation is usually given in terms of a set of mathematical equations (differential, algebraic) whose solution yields the dynamic or static behavior of the chemical process we examine. [Pg.390]

The arrow in this equation may be likened to the equals sign (=) in a mathematical equation, and the chemical equation may be re-arranged in a similar way to algebraic equations giving ... [Pg.222]

An important driver which has influenced several of the subtasks in the array synthesis methodologies in this book is the solution of the algebraic path problem (APP) which is occurring frequently in mathematical equation solvers and in data analysis. This driver will be discussed in detail in chapter 3. Several crucial subtasks will be identified, and the results for several architectures optimized for the APP problem will be described. For many of these subtasks, a link will be made with the synthesis techniques and tools necessary to address these issues. [Pg.10]

Course work should include a focus on higher-level mathematics in such areas as calculus, linear algebra, differential equations, and statistics. [Pg.669]

Some topics covered in this volume are more easily described by mathematical equations than by words, while others can only be described in algebraic language. An attempt is made in this chapter to state the mathematical principles which are the foundation of kinetic behaviour and to present the methods used to derive the equations which describe this behaviour. It is not essential to understand the contents of this chapter to benefit from the rest of this volume, but it is difficult to avoid mistakes in kinetic investigations without it. [Pg.19]

E. Hairer and G. Wanner. Solving Ordinary Differential Equations II. Stiff and Differential-Algebraic Problems, volume 14 of Springer Series in Computational Mathematics. Springer-Verlag, New York, New York, second edition, 1996. [Pg.259]

Mathematically, two factors are independent if they do not appear in the same term in the algebraic equation describing the response surface. For example, factors A and B are independent when the response, R, is given as... [Pg.670]

Mathematically speaking, a process simulation model consists of a set of variables (stream flows, stream conditions and compositions, conditions of process equipment, etc) that can be equalities and inequalities. Simulation of steady-state processes assume that the values of all the variables are independent of time a mathematical model results in a set of algebraic equations. If, on the other hand, many of the variables were to be time dependent (m the case of simulation of batch processes, shutdowns and startups of plants, dynamic response to disturbances in a plant, etc), then the mathematical model would consist of a set of differential equations or a mixed set of differential and algebraic equations. [Pg.80]

By contrast, a numerical computer program for solving such integration problems would depend on approximating the mathematical expression by a series of algebraic equations over expHcit integration limits. [Pg.531]

The formulation step may result in algebraic equations, difference equations, differential equations, integr equations, or combinations of these. In any event these mathematical models usually arise from statements of physical laws such as the laws of mass and energy conservation in the form. [Pg.425]

CSTRs and other devices that require flow control are more expensive and difficult to operate. Particularly in steady operation, however, the great merit of CSTRs is their isothermicity and the fact that their mathematical representation is algebraic, involving no differential equations, thus maldng data analysis simpler. [Pg.708]


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