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Byju's Answer
Standard XII
Mathematics
Addition and Subtraction of a Matrix
If [ 9 -1 4...
Question
If
[
9
−
1
4
−
2
1
3
]
=
A
+
[
1
2
−
1
0
4
9
]
, then find the matrix
A
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Solution
[
9
−
1
4
−
2
1
3
]
=
A
+
[
1
2
−
1
0
4
9
]
Let,
A
=
[
a
b
c
d
e
f
]
⇒
[
9
−
1
4
−
2
1
3
]
=
[
a
b
c
d
e
f
]
+
[
1
2
−
1
0
4
9
]
⇒
[
9
−
1
4
−
2
1
3
]
=
[
a
+
1
b
+
2
c
−
1
d
+
0
e
+
4
f
+
9
]
∴
A
=
[
8
−
3
5
−
2
−
3
−
6
]
Hence, the answer s
[
8
−
3
5
−
2
−
3
−
6
]
.
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Similar questions
Q.
If
[
9
−
1
4
−
2
1
3
]
=
A
+
[
1
2
−
1
0
4
9
]
, then find the matrix A.
Q.
If
9
-
1
4
-
2
1
3
=
A
+
1
2
-
1
0
4
9
, then find matrix A.
Q.
Find matrix A, if
1
2
-
1
0
4
9
+ A =
9
-
1
4
-
2
1
3
Q.
If
P
=
⎡
⎢
⎣
1
2
−
3
3
−
1
2
−
2
1
3
⎤
⎥
⎦
,
Q
=
⎡
⎢
⎣
2
3
1
3
1
2
1
2
3
⎤
⎥
⎦
, then find matrix R such that
P
+
Q
+
R
is a zero matrix.
Q.
If
2
1
3
-
1
0
-
1
-
1
1
0
0
1
1
1
0
-
1
=
A
, then write the order of matrix A.
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