Real number - Wikipedia, the free encyclopedia
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In mathematics, the real numbers may be described informally in several different ways. The real numbers include both rational numbers, such as 42 and −23/129, and irrational numbers, such as pi and...
en.wikipedia.org/wiki/Real_number
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It is true that the real numbers are 'points on a line,' but that's not the whole truth. This web page explains that the real number system is a Dedekind-complete ordered field. The various concepts are illustrated with several other fields as well.
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www.math.vanderbilt.edu/~schectex/courses/thereals/
www.math.vanderbilt.edu/~schectex/courses/thereals/
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Contrary to what some people might tell you, imaginary numbers are not numbers that only exist in the brains of weird people. Or maybe they are; all numbers in math are "imaginary" in the sense that you can't touch them or experience them directly. ... Well, the real numbers are all the positive numbers, negative numbers,
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mathforum.org/dr.math/faq/faq.imag.num.html
mathforum.org/dr.math/faq/faq.imag.num.html
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Definitions: Real Numbers is a set of numbers that includes both rational and irrational numbers ... So the following are examples of real numbers:
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www.pindling.org/Math/Learning/Basic_Math/Rationals/rea...
www.pindling.org/Math/Learning/Basic_Math/Rationals/real_numbers.html
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Without getting technical, real numbers are all numbers that can be written as a possibly never repeating decimal fraction. For example, all rational numbers are real. Their decimal representations do repeat. Decimal fractions whose representation do not repeat are irrational.
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www.math.utah.edu/~alfeld/math/numbers.html
www.math.utah.edu/~alfeld/math/numbers.html
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Rational and irrational numbers definitions, examples, and more. ... That means it can be written as a fraction, in which both the numerator (the number on top) and the denominator (the number on the bottom) are whole numbers. ... Math & Money...
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www.factmonster.com/ipka/A0876704.html
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Rational and Irrational Numbers ... Classify the number as rational, irrational, or not a real number.; ... November Math...
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www.edhelper.com/math/realnumbers1.htm
www.edhelper.com/math/realnumbers1.htm
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Students surf a special site created with them in mind and compare their school numbers with those of schools in other parts of the United States. Work in math, geography, graphing, and much more! Included: Teaching masters for use across the grades.
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www.education-world.com/a_lesson/lesson135.shtml
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Finding the fun in good math; Shredding bad math and squashing the crackpots who espouse it. ... There are a couple of ways of describing the real numbers. I'm going to take you through a couple of them: first, an informal intuitive description; then an axiomatic definition, and finally, a constructive definition...
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scienceblogs.com/goodmath/2007/02/basics_real_numbers_2...
scienceblogs.com/goodmath/2007/02/basics_real_numbers_2.php
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