Find U, A; and NË, A; if for every positive integer i, a) A; = {-i, -i + 1, ..., -1, 0, 1, ..., i– 1, i}. b) A; = {-i, i}. c) A; = [-i, i], that is, the set of real numbers x with -i i. i=1 %D

Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
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Find U, A; and NË, 4; if for every positive integer i,
a) A; = {-i, -i + 1, ..., –1, 0, 1, ..., i– 1, i}.
b) A; = {-i, i}.
c) A; = [-i, i], that is, the set of real numbers x with
-i <x< i.
d) A; = [i, co), that is, the set of real numbers x with
x > i.
i=1
%D
Transcribed Image Text:Find U, A; and NË, 4; if for every positive integer i, a) A; = {-i, -i + 1, ..., –1, 0, 1, ..., i– 1, i}. b) A; = {-i, i}. c) A; = [-i, i], that is, the set of real numbers x with -i <x< i. d) A; = [i, co), that is, the set of real numbers x with x > i. i=1 %D
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