Prove that if n > 1, the nth partial sum of the harmonic series is not an integer. Hint: Let 2* be the largest power of 2 that is less than or equal to n and let M be the product of all odd integers that are less than or equal to n. Suppose that s, = m, an integer. Then M2 s, = M2*m. The right side of this equation is even. Prove that the left side is odd by showing that each of its terms is an even integer, except for the last one.
Prove that if n > 1, the nth partial sum of the harmonic series is not an integer. Hint: Let 2* be the largest power of 2 that is less than or equal to n and let M be the product of all odd integers that are less than or equal to n. Suppose that s, = m, an integer. Then M2 s, = M2*m. The right side of this equation is even. Prove that the left side is odd by showing that each of its terms is an even integer, except for the last one.
Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter10: Sequences, Series, And Probability
Section10.3: Geometric Sequences
Problem 44E
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