(Section 0.4: Absolute Value and Distance) 0.4.1SECTION 0.4: ABSOLUTE VALUE AND DISTANCELEARNING OBJECTIVES• Be able to formally define absolute value. • Know how to take the absolute value of a real number. • Know properties of the absolute value operation. • Relate absolute value and distances on the real number line. PART A: DISCUSSION• Understanding the definition of absolute value is crucial to understanding the absolute value function and its graph, which will be discussed in Section 1.3. • As usual, we assume that
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