Factor the difference an+1 - an to show that the given sequence {an} is strictly increasing or strictly decreasing. +oo 16n +7 n=1 An+1 - an = (16n – 7)(16n + 23)' strictly increasing (16n + 7)(16n + 23)' ; strictly increasing 7. (16n + 7)(16n + 23)' strictly decreasing (16n - 7)(16n – 23) strictly decreasing 16 (16n + 7)(16n + 23) ; strictly increasing

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter10: Sequences, Series, And Probability
Section10.2: Arithmetic Sequences
Problem 2E
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6
Factor the difference an+1 – a, to show that the given sequence {an} is strictly increasing or strictly decreasing.
16n +7) n=1
an+1 - an =
strictly increasing
(16n – 7)(16n + 23)'
7
strictly increasing
(16n + 7)(16n + 23)
; strictly decreasing
(16n + 7)(16n + 23)'
strictly decreasing
(16n – 7)(16n – 23)'
16
; strictly increasing
(16n + 7)(16n + 23)
Transcribed Image Text:Factor the difference an+1 – a, to show that the given sequence {an} is strictly increasing or strictly decreasing. 16n +7) n=1 an+1 - an = strictly increasing (16n – 7)(16n + 23)' 7 strictly increasing (16n + 7)(16n + 23) ; strictly decreasing (16n + 7)(16n + 23)' strictly decreasing (16n – 7)(16n – 23)' 16 ; strictly increasing (16n + 7)(16n + 23)
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