Titlebook: Introductory Mathematics: Applications and Methods; Gordon S. Marshall Textbook 1998 Springer-Verlag London Limited 1998 Algebra.Variable.

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Gordon S. MarshallA book for students to read before university to give themselves a head-start - Completely self-contained, with solutions provided to exercises of varying difficulty - Alternatively, universities may

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https://doi.org/10.1007/978-1-4471-3412-1Algebra; Variable; calculus; equation; function; mathematics; theorem

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Introductory Mathematics: Applications and Methods978-1-4471-3412-1Series ISSN 1615-2085 Series E-ISSN 2197-4144

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Simultaneous Linear Equations,Systems of simultaneous linear equations are commonplace in optimisation problems, statistics, economics and process control. The following example illustrates a simple application of linear equations.

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Complex Numbers,Complex numbers are an extension of the real number system, just as real numbers are an extension of the set of rational numbers. Complex numbers make it possible to solve any quadratic equation. For example, if we attempt to find the roots of the quadratic x. − 2x + 5 = 0 using the standard formula we get