Test the series below for convergence using the Root Test. n 8n Зп + 5 n=1 The limit of the root test simplifies to lim n- 00 |f(n)| where f(n) The limit is: (enter oo for infinity if needed)

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter10: Sequences, Series, And Probability
Section10.3: Geometric Sequences
Problem 49E
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Test the series below for convergence using the Root Test.
8n
Σ(
Зп + 5
n=1
The limit of the root test simplifies to lim f(n) where
f(n) =
The limit is:
(enter oo for infinity if needed)
Transcribed Image Text:Test the series below for convergence using the Root Test. 8n Σ( Зп + 5 n=1 The limit of the root test simplifies to lim f(n) where f(n) = The limit is: (enter oo for infinity if needed)
Expert Solution
Step 1

Given: n=18n3n+5n

Step 2

Explanation:

Let fn=8n3n+5n

Root Test:

L=limnan1n  =limnan1n  =limn8n3n+5nn  =limn8n3n+5   =limn83+5n   =83>1

So, given series are convergent series 

The limit is: 83

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