The series n3 ∞ 1 dx (C) because the integral 1 converges, f (x) = is positive and decreasing for all x > 1. O (D) because the integral , diverges, f(x) = is positive and 1 decreasing for all x > 2. (C) because the integral dæ diverges, f (x) 1 1 is positive and decreasing for all x > 1. None of the given options is correct. ∞ 1 (D) because the integral * dæ converges, f (x) = is positive and decreasing for all x > 1.

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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1
The series
n³
(C) because the integral dx
converges, f(x):
decreasing for all x > 1.
is positive and
x3
1
O (D) because the integral J,
diverges, f(x)
dx
1
= is positive and
decreasing for all x > 2.
1
(C) because the integral dx
diverges, f (x) =
1
is positive and
decreasing for all x > 1.
None of the given options is correct.
1
(D) because the integral *3 dx
converges, f(x)
1
is positive and
decreasing for all x > 1
Transcribed Image Text:1 The series n³ (C) because the integral dx converges, f(x): decreasing for all x > 1. is positive and x3 1 O (D) because the integral J, diverges, f(x) dx 1 = is positive and decreasing for all x > 2. 1 (C) because the integral dx diverges, f (x) = 1 is positive and decreasing for all x > 1. None of the given options is correct. 1 (D) because the integral *3 dx converges, f(x) 1 is positive and decreasing for all x > 1
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