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Byju's Answer
Standard XII
Mathematics
Skew Symmetric Matrix
If A is a s...
Question
If
A
is a square matrix, then
A
−
A
′
is a
A
Diagonal matrix
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B
Skew-symmetric matrix
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C
Symmetric matrix
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D
None of these
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Solution
The correct option is
A
Skew-symmetric matrix
Given
A
is square matrix
A
−
A
T
is which kind of matrix
(
A
−
A
T
)
T
=
A
T
−
(
A
T
)
T
=
A
T
−
A
=
−
(
A
−
A
T
)
∵
(
A
−
A
T
)
T
=
−
(
A
−
A
T
)
∴
A
−
A
T
is a skew symmetric matrix
Option B is correct
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0
Similar questions
Q.
If A is a square matrix, then AA is a
(a) skew-symmetric matrix
(b) symmetric matrix
(c) diagonal matrix
(d) none of these
Q.
If a matrix A is both symmetric and skew-symmetric, then
(a) A is a diagonal matrix
(b) A is a zero matrix
(c) A is a scalar matrix
(d) A is a square matrix
Q.
If A is a square matrix
A
+
A
T
is symmetric matrix, then
A
−
A
T
=
Q.
If the matrix A is both symmetric and skew symmetric, then A. A is a diagonal matrix B. A is a zero matrix C. A is a square matrix D. None of these
Q.
Assertion :The matrix
A
=
⎛
⎜
⎝
0
a
b
−
a
0
c
−
b
−
c
0
⎞
⎟
⎠
is a skew symmetric matrix. Reason: A square matrix
A
=
(
a
i
j
)
of order m is said to be skew symmetric if
A
T
=
−
A
. .
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