Question

If A is a 3 × 3 skew-symmetric matrix, then trace of A is equal to

Solution

Correct option is

|A|

As A is a skew symmetric matrix  

                

    

    

.

SIMILAR QUESTIONS

Q1

The inverse of a skew symmetric matrix of odd order is

Q2

If A is an orthogonal matrix, then |A| is

Q3

If A is a non-singular matrix of size 3 × 3, then adj (adj A) is equal to

Q4

If A and B are two non-zero square matrices of the same order such that the product AB = O, then  

Q6

If A and B are two square matrices such that B = –A–1 BA, then (A + B)2 is equal to 

Q8

The value of x for which the matrix  is inverse of  is 

Q9
Q10

, is equal to