જો $A=\left[\begin{array}{lll}1 & 2 & 3 \\ 4 & 3 & 2 \\ 3 & 4 & 5\end{array}\right]$ હોય,તો $(A+A^T)(A-A^T)=$

  • A
    $4\left[\begin{array}{lll}3 & 2 & -3 \\ 3 & 0 & -3 \\ 3 & 2 & -3\end{array}\right]$
  • B
    $\left[\begin{array}{lll}12 & 8 & 12 \\ 12 & 0 & 12 \\ 12 & 8 & 12\end{array}\right]$
  • C
    $4\left[\begin{array}{ccc}3 & -2 & -3 \\ 3 & 0 & -3 \\ 3 & -2 & -3\end{array}\right]$
  • D
    $\left[\begin{array}{lll}-12 & 8 & 12 \\ -12 & 0 & 12 \\ -12 & 8 & 12\end{array}\right]$

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જ્યારે $A=\left[\begin{array}{ccc}0 & a & b \\ -a & 0 & c \\ -b & -c & 0\end{array}\right]$ હોય,ત્યારે $\frac{1}{2}(A+A^{\prime})$ અને $\frac{1}{2}(A-A^{\prime})$ શોધો.

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જો શ્રેણિક $A = \begin{bmatrix} 0 & a & a \\ 2b & b & -b \\ c & -c & c \end{bmatrix}$ લંબકોણીય (orthogonal) હોય,તો $a, b, c$ ની કિંમતો શોધો.

શ્રેણિક $A = \begin{bmatrix} 1/\sqrt{2} & 1/\sqrt{2} \\ -1/\sqrt{2} & -1/\sqrt{2} \end{bmatrix}$ એ

જો ચોરસ શ્રેણિક $A$ એવો હોય કે જેથી $\left(A^T-\frac{1}{2} I\right)\left(A-\frac{1}{2} I\right) = \left(A^T+\frac{1}{2} I\right)\left(A+\frac{1}{2} I\right) = I$,જ્યાં $I$ એક એકમ શ્રેણિક છે,તો $A$ એ

શ્રેણિકો $A$ અને $B$ માટે,ચકાસો કે $(AB)^{\prime} = B^{\prime} A^{\prime}$ જ્યાં $A = \begin{bmatrix} 0 \\ 1 \\ 2 \end{bmatrix}$ અને $B = \begin{bmatrix} 1 & 5 & 7 \end{bmatrix}$.

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