Prove or Disprove the following statements. You may type or hand write your answer. a. For all real numbers a, b with a + 0, if a|b, then a? |b2. b. If r is a rational number and x is irrational, then rx is rational. c. For all integers a, b, then if a³ is odd, then a is odd.
Prove or Disprove the following statements. You may type or hand write your answer. a. For all real numbers a, b with a + 0, if a|b, then a? |b2. b. If r is a rational number and x is irrational, then rx is rational. c. For all integers a, b, then if a³ is odd, then a is odd.
Elements Of Modern Algebra
8th Edition
ISBN:9781285463230
Author:Gilbert, Linda, Jimmie
Publisher:Gilbert, Linda, Jimmie
Chapter7: Real And Complex Numbers
Section7.1: The Field Of Real Numbers
Problem 19E: Prove that if is a nonzero rational number and is irrational, then is irrational.
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