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<p><span style="color: rgb(33, 37, 41); font-family: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", "Liberation Sans", sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji"; letter-spacing: 0.7px;">The purpose of this book is twofold: firstly it is designed for quick reference to mathematical concepts (to find out what a tangent is to compute percentages to recall formulas for the roots of a quadratic equation etc.). All definitions rules formulas and theorems are supplied with examples. Where required hints and suggestions are given as to the use of a rule or how to avoid common mistakes and so forth. This handbook can serve as a manual for reviewing the essentials of mathematics and even as a first introductory course in its practical applications.</span><br></p>
