EXAMPLE 10 Discuss the convergence n! SOLUTION We observe that n (n-1) 3.2.1. ... an ² of the sequence Then, since 1/n → 0 theorem) ano. n. (n-1). n n. (n-1) n. n . . as 2 ... an n - 3.2.1 • n • n •n 3 an since the numerator is less than or equal to the denominator for the quantity in parenthesis. Therefore • n (1 -). ÷ n n!/n", where ² n we have (by the squeeze )
EXAMPLE 10 Discuss the convergence n! SOLUTION We observe that n (n-1) 3.2.1. ... an ² of the sequence Then, since 1/n → 0 theorem) ano. n. (n-1). n n. (n-1) n. n . . as 2 ... an n - 3.2.1 • n • n •n 3 an since the numerator is less than or equal to the denominator for the quantity in parenthesis. Therefore • n (1 -). ÷ n n!/n", where ² n we have (by the squeeze )
Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter10: Sequences, Series, And Probability
Section10.2: Arithmetic Sequences
Problem 30E
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