1.

The matrix A= ( begin{bmatrix}2&9 2&6 end{bmatrix} ) as a sum of symmetric and skew-symmetric matrix is ______

A. ( frac{1}{4} begin{bmatrix}4&11 11&12 end{bmatrix} frac{1}{2} begin{bmatrix}0&7 -7&0 end{bmatrix} )
B. ( frac{1}{4} begin{bmatrix}4&11 11&12 end{bmatrix} + frac{1}{2} begin{bmatrix}0&7 7&0 end{bmatrix} )
C. ( frac{1}{2} begin{bmatrix}4&11 11&12 end{bmatrix} + frac{1}{2} begin{bmatrix}0&7 -7&0 end{bmatrix} )
D. ( frac{1}{2} begin{bmatrix}4&11 11&12 end{bmatrix} frac{1}{2} begin{bmatrix}0&7 -7&0 end{bmatrix} )
Answer» D. ( frac{1}{2} begin{bmatrix}4&11 11&12 end{bmatrix} frac{1}{2} begin{bmatrix}0&7 -7&0 end{bmatrix} )


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