(i) Show that the matrix 
1
1
5
A
1
2
1
5
1
3
−




= −





 is a symmetric matrix (ii)  Show that the matrix 
0
1
1
A
1
0
1
1
1
0
−




= −




−


 is a skew symmetric matrix 8 For the matrix 
1
5
A
6
7


= 



, verify that
(i) (A + A′) is a symmetric matrix
(ii) (A – A′) is a skew symmetric matrix
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