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If A is a 3*3 skew symmetric matrix then trace of A is equal toOptions (a)-1 (b)7 (c)|A| (d)None of these

If A is a 3*3 skew symmetric matrix then trace of A is equal toOptions (a)-1 (b)7 (c)|A| (d)None of these

Grade:12

2 Answers

Arun
25750 Points
6 years ago
since in skew symmetric matrices, all the diagonal entries should be zero.
and trace = sum of all the diagonal entries
thus trace = 0 in case of skew symmetric matrices
thus option D (None of these ) is right answer
Qwerty
13 Points
4 years ago
All principal diagonal elements of a skew symmetric matrix are zero thus trace ie sum of all diagonal elements of a matrix is zero

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