R.1 - Sullivan Algebra and Trigonometry: Section R.1 Real...

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Sullivan Algebra and Trigonometry: Section R.1 Real Numbers Objectives of this Section Classify Numbers Evaluate Numerical Expressions Work with Properties of Real Numbers
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Describing Sets of Numbers The Roster Method The roster method is used to list the elements in a set. For example, we can describe the set of even digits as follows: E = {0, 2, 4, 6, 8}
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Describing Sets of Numbers Set Builder Notation Set Builder notation is used to describe a set of numbers by defining a property that the numbers share. For example, we can describe the set of odd digits as follows: O = {x | x is an odd digit}
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Subsets of the Real Numbers The Rational Numbers A rational number is a number that can be expressed as a quotient a/b . The integer a is called the numerator , and the integer b, which cannot be 0, is called the denominator . All rational numbers can be written as a decimal that either terminates or repeats. For example: 1/3 = 0.3333…
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R.1 - Sullivan Algebra and Trigonometry: Section R.1 Real...

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