d the error in the “proof” of the following “theorem.” “Theorem”: Let R be a relation on a set A that is symmetric and transitive. Then R is reflexive. Proof: Let a ∈ A . Take an element b ∈ A such that ( a , b ) ∈ R . Because R is symmetric, we also have ( b , a ) ∈ R . Now using the transitive property, we can conclude that ( a , a ) ∈ R because ( a , b ) ∈ R and ( b , a ) ∈ R .
d the error in the “proof” of the following “theorem.” “Theorem”: Let R be a relation on a set A that is symmetric and transitive. Then R is reflexive. Proof: Let a ∈ A . Take an element b ∈ A such that ( a , b ) ∈ R . Because R is symmetric, we also have ( b , a ) ∈ R . Now using the transitive property, we can conclude that ( a , a ) ∈ R because ( a , b ) ∈ R and ( b , a ) ∈ R .
Solution Summary: The author explains that the error in the given proof a theorem is "Take an element bin A such that (a,b) in R.
d the error in the “proof” of the following “theorem.”
“Theorem”:LetRbe a relation on a setAthat is symmetric and transitive. ThenRis reflexive.
Proof:Let
a
∈
A
.Take an element
b
∈
A
such that
(
a
,
b
)
∈
R
.BecauseR issymmetric, we also have
(
b
,
a
)
∈
R
. Now using the transitive property, we can conclude that
(
a
,
a
)
∈
R
because
(
a
,
b
)
∈
R
and
(
b
,
a
)
∈
R
.
-0-3-0-8
10
=
=
5
Determine if w can be written as a linear combination of V1, V2, and v3. Show all of your work
and justify your conclusions.
Q1.2
1 Point
Which of the following best describes Span
O a point
two points
a line
O a plane
O all of R³
Save Answer
Q1.3
1 Point
Which of the following best describes Span
O a point
two points
a line
O a plane
O all of R³
Save Answer
Q1.4
1 Point
Which of the following best describes Span
O a point
O three points
a line
O a plane
O all of R³
Save Answer
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RELATIONS-DOMAIN, RANGE AND CO-DOMAIN (RELATIONS AND FUNCTIONS CBSE/ ISC MATHS); Author: Neha Agrawal Mathematically Inclined;https://www.youtube.com/watch?v=u4IQh46VoU4;License: Standard YouTube License, CC-BY