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Precalculus with Calculus Previews, 5th Edition by Zill

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9 Systems of Equations and Inequalities

Chapter Outline

9.1 Systems of Linear Equations

9.2 Determinants and Cramer’s Rule

9.3 Systems of Nonlinear Equations

9.4 Systems of Inequalities

9.5 imagePartial Fractions

      Chapter 9 Review Exercises

9.1 Systems of Linear Equations

Introduction Recall from Section 2.3 that a linear equation in two variables x and y is any equation that can be put in the form ax + by = c, where a and b are real numbers and not both zero. In general, a linear equation in n variables x1, x2, …., xn is an equation of the form ...

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