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Byju's Answer
Standard XII
Mathematics
Addition and Subtraction of a Matrix
A = [ 1 2 -...
Question
A =
⎡
⎢
⎣
1
2
−
3
5
0
2
1
−
1
1
⎤
⎥
⎦
and B =
⎡
⎢
⎣
3
−
1
2
4
2
5
2
0
3
⎤
⎥
⎦
Find the matrix C satisfying the relation A + 2C = B
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Solution
C =
1
2
(B - A) =
⎡
⎢
⎣
1
−
2
5
/
2
−
1
/
2
1
3
/
2
1
/
2
1
/
2
1
⎤
⎥
⎦
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Similar questions
Q.
Given
A
=
⎡
⎢
⎣
1
2
−
3
5
0
2
1
−
1
1
⎤
⎥
⎦
and
B
=
⎡
⎢
⎣
3
−
1
2
4
2
5
2
0
3
⎤
⎥
⎦
.
Find the matrix
C
such that
A
+
2
C
=
B
If
C
=
⎡
⎢ ⎢ ⎢ ⎢ ⎢ ⎢ ⎢
⎣
1
−
3
2
a
−
1
2
1
b
1
2
1
2
1
⎤
⎥ ⎥ ⎥ ⎥ ⎥ ⎥ ⎥
⎦
Find the value of a+b?
Q.
If
A
=
⎡
⎢
⎣
1
2
−
3
5
0
2
1
−
1
1
⎤
⎥
⎦
,
B
=
⎡
⎢
⎣
3
−
1
2
4
2
5
2
0
3
⎤
⎥
⎦
,
C
=
⎡
⎢
⎣
4
1
2
0
3
2
1
−
2
3
⎤
⎥
⎦
, Then Compute
(
A
+
B
)
and
(
B
−
C
)
. Also, verify that
A
+
(
B
−
C
)
=
(
A
+
B
)
−
C
Q.
If
A
=
(
4
1
2
1
−
2
3
0
3
2
)
,
B
=
(
2
0
4
6
2
8
2
4
6
)
and
C
=
(
1
2
−
3
5
0
2
1
−
1
1
)
, then
verify that
A
+
(
B
+
C
)
=
(
A
+
B
)
+
C
.
Q.
Find the determinant of given matrix
⎡
⎢
⎣
a
−
b
−
c
2
a
2
a
2
b
b
−
c
−
a
2
b
2
c
2
c
c
−
a
−
b
⎤
⎥
⎦
Q.
Let
a
,
b
and
c
be three real numbers satisfying
[
a
b
c
]
⎡
⎢
⎣
1
9
7
8
2
7
7
3
7
⎤
⎥
⎦
=
[
0
0
0
]
. . . (i)
Let
ω
be a solution of
x
3
- 1 = 0 with Im
ω
> 0. If a = 2 with b and c satisfying Eq. (i) then the value of
3
ω
a
+
1
ω
b
+
3
ω
c
is
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