Rational number

    • [PDF File]The Rational Numbers - Cornell University

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      The Rational Numbersy Contents 1. The Set Q 1 2. Addition and multiplication of rational numbers 3 2.1. Deflnitions and properties. 3 2.2. Comments 4 2.3. Connections with Z. 6 2.4. Better notation. 6 2.5. Solving the equations Ea;b and Ma;b. 8 3. Ordering the rational numbers 8 4. Sequences and limits in Q 11 5. Non-convergent Cauchy ...


    • [PDF File]Math 140a - HW 1 Solutions - University of California, San Diego

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      no rational number whose square is 12. Problem 3 (WR Ch 1 #7). Fix b > 1, y > 0, and prove that there is a unique real x such that bx = y, by completing the following outline. (This is called the logarithm of y to the base b.) (a) For any positive integer n, bn 1 n(b 1). Solution. First, we factorize the left hand side:


    • [PDF File]5. Integers, Whole Numbers And Rational Numbers - University of Houston

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      Notice that every integer m is a rational number since mm= /1. Also, the set of natural numbers, the set of whole numbers, the set of integers and the set of rational numbers are ordered by set inclusion as shown below. `] ]_⊆⊆⊆0,+ The set of rational numbers _ has much more algebraic structure than any of `, ]0,+ or ]. The proof of the ...


    • [PDF File]APPENDIX F – RATIONAL METHOD - Oregon

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      APPENDIX F – RATIONAL METHOD . 1.0 Introduction . One of the most commonly used procedures for calculating peak flows from small drainages less than 200 acres is the Rational Method. This method is most accurate for runoff estimates from small drainages with large amounts of impervious area. Examples are housing developments,


    • [PDF File]Unit 1: Extending the Number System - West Virginia Department of Education

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      117 is a natural number, a whole number, an integer, and a rational number. 1 2 is a rational number. 0 is a whole number, an integer, and a rational number. -12.64039… is an irrational number. -3 is an integer and a rational number. 6.36 is a rational number. S is an irrational number. 4 9 is a rational number.


    • [PDF File]Density of the Rationals - UC Davis

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      Finally, we prove the density of the rational numbers in the real numbers, meaning that there is a rational number strictly between any pair of distinct real numbers (rational or irrational), however close together those real numbers may be. Theorem 6. If x;y2R and x


    • [PDF File]WHAT KIND OF NUMBER IS IT? - Idaho State University

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      Rational Numbers These are any numbers that can be expressed as a fraction, which includes all integers and most decimals. Examples include - 1 2, 208, 2 3, 0.66, 8 −27, −4 1, -4, 19 8, 0. 75 Integers are rational numbers because 2 = 2 1-13 = −13 1 Fractions are rational numbers so long as their bottom number (the denominator) is not zero ...


    • [PDF File]1 Valuations of the field of rational numbers - University of Chicago

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      semigroup Q¯ of positive rational numbers. We will call the function Q£!Q¯ mapping a nonzero rational number x to x or ¡x depending on whether x 2Q¯ or ¡x 2Q¯ the real valuation. It defines a distance on Q with values in Q¯ and thus a topology on Q. A real number is defined as an equivalence class of Cauchy sequences of rational numbers.


    • [PDF File]Math 8: Rational Numbers - UC Santa Barbara

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      Math 8: Rational Numbers Spring 2011; Helena McGahagan Intuitively, we think of rational numbers as fractions – given two integers m and n (n 6= 0), we would like to say that m n is a rational number. The problem with this is that many of these fractions should actually be the same rational number, so we can’t simply define the


    • [PDF File]Introduction - University of Connecticut

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      which is a rational number. (This generalizes the calculations that led to (2.1), which is the special case j = 0.) Allowing multiplication or division by powers of p, we have shown all eventually periodic p-adic expansions are rational numbers. To prove the converse, that every rational number r has an eventually periodic p-adic


    • [PDF File]Rational Between Reals Proof Example - Department of Mathematics and ...

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      Thus is a rational number which satisfies Dœ B D CÞñ5 " 8 Note: The figure is not an “official” part of the proof. But the inclusion of a figure certainly can help the reader understand what's going on. Just be sure that the actual proof can actually stand on its own (through its algebra, etc.) without actually using the picture. (OVER)


    • [PDF File]6.NS.7.a, 6.NS.7.b Ordering Rational Numbers - Hazleton Area High School

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      Ordering Rational Numbers 6.NS.7.a, 6.NS.7.b LessON 13 For any point on a horizontal number line, all points to the right of the point have a greater value. All points to the left have a lesser value. 0 4 0.2 ˜4 ˜3 ˜2 ˜1 1 2 3 Less Than 0.2 Greater Than 0.2 Points are ordered on a number line from left to right, that is, from least to ...


    • [PDF File]Continued Fractions - Cornell University

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      Every rational number has a simple continued fraction expansion which is nite and every nite simple continued fraction expansion is a rational number. Proof. Suppose we start with a rational number, then Euclid’s algorithm terminates in nitely many steps. This is because the successive reminders are strictly decreasing as they have to


    • [PDF File]Direct Proof and Counterexample II: Rational Numbers

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      Example 4 – The Double of a Rational Number Derive the following as a corollary of Theorem 4.2.2. !!!! Solution: The double of a number is just its sum with itself. ! But since the sum of any two rational numbers is rational (Theorem 4.2.2), the sum of a rational number with itself is rational. ! Hence the double of a rational number is rational.


    • What Are Rational Numbers? [8th grade] - Trinity University

      decimal, fraction, rational number The properties of rational numbers expressed in a variety of forms Compute with rational numbers being expressed in a variety of forms Determine if a solution is appropriate and moving beyond a particular problem by thinking of other situations Content Standard(s)


    • [PDF File]The Rational Numbers Fields - Department of Mathematics and Statistics

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      Think of a rational number ( ). To name a rational number we need two integers+,,Á! +ß, ,Á!Þ where So, starting with , we could try to create by defining a rational™ number to be a pair of integers in which Ð+ß,Ñ ,Á!Þ However, that attempt would give us “too many” different rationals. After all, we think of as being the same ...


    • [PDF File]Operations on Rational Numbers - Alamo Colleges District

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      Recall that a rational number is one that can be written in the form . q p, where p and q are integers and . q. ≠. 0. Examples of rational numbers are 9 5 − and 5 12. The number 7 9 is not a rational number because 7 is not an integer. All integers are rational numbers. Terminating and repeating decimals are also rational numbers. Add ...


    • [PDF File]Rational-Number Concepts

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      the rational-number concept involves a rich set of integrated subconstructs and processes, related to a wide range of elementary but deep concepts (e.g., measurement, probability, coordinate


    • [PDF File]Irrational Numbers - University of Houston

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      d) 6 6 is a rational number because it is equivalent to 6 1. e) -4 -4 is a rational number because it is equivalent to 4 1 −. f) 0.2 0.2 is a rational number because it is equivalent to 2 10 (or 1 5). g) 0.3 0.3 is a rational number because it is equivalent to 1 3. Note: Any terminating decimal (such as 0.2, 0.75, 0.3157) is a rational number ...


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