When comparing these 3 problems, in the answer key for 4 a & b, it says < 0 for n> or equal to 1. Why for number 5 does it say for < 1 instead of less then zero like the previous 2. I hope this makes sense the way I worded it . Thank you for all your help ? n+14n+31.4n(4n-1)(4n+3)<0 for n 2 1, so strictly decreasing.ant1- 0, = (+1-2*) – (n – 2" ) =1-2"<0 for n21, so strictly decreasing.10"||5.Use a a to show thatis strictly increasing or strictly decreasing.(2n)!10+1K12+2(2)!101 fr 21 so strictly decreasing.10

Answered: Image /qna-images/answer/aae30ed6-c507-440c-b270-25a59fc95bff.jpg

Answered: When comparing these 3 problems, in the…

When comparing these 3 problems, in the answer key for 4 a & b, it says < 0 for n> or equal to 1. Why for number 5 does it say for < 1 instead of less then zero like the previous 2.

Advanced Engineering Mathematics

10th Edition

ISBN:9780470458365

Author:Erwin Kreyszig

Publisher:Erwin Kreyszig

Chapter2: Second-order Linear Odes

Section: Chapter Questions

Problem 1RQ

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Question

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When comparing these 3 problems, in the answer key for 4 a & b, it says < 0 for n> or equal to 1. Why for number 5 does it say for < 1 instead of less then zero like the previous 2. I hope this makes sense the way I worded it . Thank you for all your help ?

n+1
4n+3
1.
4n
(4n-1)(4n+3)
<0 for n 2 1, so strictly decreasing.
ant1- 0, = (+1-2*) – (n – 2" ) =
1-2"<0 for n21, so strictly decreasing.
10"||
5.
Use a a to show that
is strictly increasing or strictly decreasing.
(2n)!
10+1
K12+2
(2)!
10
1 fr 21 so strictly decreasing.
10

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