Let a ER which expressions are correct? and give the justification why they are part of the Borel o-algebra, B(R) (e) - n n(-) {a} {a} %3D %3D U {a}, a, is rational Q = U {a;}, a; is rational IEN IEN () - U(--) 6) - u {a} {a} %3D %3D nEN nEN U {a;}, az is rational U (a}, a, is irrational IEN

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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Let a €R which expressions are correct? and give the justification why
they are part of the Borel o-algebra, B(R)
{a}
%3D
{a}
%3D
nEN
nEN
U {a;}, as is rational
U {a}, az is rational
iEN
{a}
%3D
{a} =
72
nEN
nEN
U {a;}, az is rational
IEN
U (a}, a, is irrational
IEN
Transcribed Image Text:Let a €R which expressions are correct? and give the justification why they are part of the Borel o-algebra, B(R) {a} %3D {a} %3D nEN nEN U {a;}, as is rational U {a}, az is rational iEN {a} %3D {a} = 72 nEN nEN U {a;}, az is rational IEN U (a}, a, is irrational IEN
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