## Precalculus: A View of the World Around UsPresents maths using the rule of four by introducing concepts numerically, analytically, graphically and verbally. This text focuses on algebra as a pattern-seeking device and shows how maths is part of historical heritage. |

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### Contents

CHAPTE R 1 MODELING AND PROBLEM SOLVING | 1 |

FUNCTIONS | 35 |

LINEAR SYSTEMS | 101 |

Copyright | |

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### Common terms and phrases

algebraic analytical axis of symmetry basic graph calculator coefficient complex number Cramer's Rule Creating Models defined describe directed angle domain and range ellipse end behavior evaluate example Exercises In Exercises Explain exponential function expression factor formula func Gauss-Jordan elimination graphical hyperbola identity illustrate increasing integer intercepts Interpreting Mathematics interval inverse inverse functions Law of Cosines Law of Sines linear equations linear function linear system logarithmic MATHEMATICAL LOOKING GLASS matrix method multiply Observations obtain one-to-one parabola parametric equations points polar coordinates polynomial function Problem Solving quadratic function radians radius rate of change rational function real numbers rectangular represent right triangle Section sequence shirts shown in Figure shows side sin2 sketch the graph solution standard graphing form system of linear Theorem tion trigonometric functions unit circle variables vector velocity verify vertex vertical asymptote viewing window Writing to Learn x-intercepts zeros