2.5.1 Show that there can be no rational number which is the square root of 2....
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2.5.1 Show that there can be no rational number which is the square root of 2. (Hint: Start by assuming that there is such a number, and observe that if it does exist it can be expressed as a fraction in lowest terms. From this starting point, show that both the numerator and the denominator of the fraction are necessarily divisible by two, and thus the fraction, which was assumed to be in lowest terms, is not in lowest terms and can not be put in lowest terms. Therefore, the initial assumption, that the fraction exists, must be false.) 2.5.1 Show that there can be no rational number which is the square root of 2. (Hint: Start by assuming that there is such a number, and observe that if it does exist it can be expressed as a fraction in lowest terms. From this starting point, show that both the numerator and the denominator of the fraction are necessarily divisible by two, and thus the fraction, which was assumed to be in lowest terms, is not in lowest terms and can not be put in lowest terms. Therefore, the initial assumption, that the fraction exists, must be false.)
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Related Book For
Microeconomics An Intuitive Approach with Calculus
ISBN: 978-0538453257
1st edition
Authors: Thomas Nechyba
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