Which of the following matrices is both symmetric and skew symmetric? – McqOptions

MCQOPTIONS

1.	Which of the following matrices is both symmetric and skew symmetric?
A.	A= ( begin{bmatrix}1&0 1&0 end{bmatrix} )
B.	A= ( begin{bmatrix}0&0&0 0&0&0 0&0&0 end{bmatrix} )
C.	A= ( begin{bmatrix}1&0&1 1&0&1 end{bmatrix} )
D.	A= ( begin{bmatrix}0&0&-2 1&0&-1 2&0&0 end{bmatrix} )
Answer» C. A= ( begin{bmatrix}1&0&1 1&0&1 end{bmatrix} )

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