જો $A = \begin{bmatrix} 1 & 2 & -2 \\ 2 & -1 & 2 \\ -1 & 1 & -2 \end{bmatrix}$ હોય,તો $A + 2A^{-1} =$

  • A
    $\begin{bmatrix} 1 & 4 & 0 \\ 4 & -5 & -4 \\ 0 & -2 & -7 \end{bmatrix}$
  • B
    $\begin{bmatrix} 0 & 2 & 2 \\ 2 & -4 & -6 \\ 2 & -3 & -5 \end{bmatrix}$
  • C
    $\begin{bmatrix} 0 & 2 & 1 \\ 2 & -4 & -3 \\ 2 & -6 & -5 \end{bmatrix}$
  • D
    $\begin{bmatrix} 1 & 4 & -1 \\ 4 & -5 & -1 \\ 1 & -5 & -7 \end{bmatrix}$

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જો $\left| {\begin{array}{*{20}{c}}{{a_1}}&{{b_1}}&{{c_1}}\\{{a_2}}&{{b_2}}&{{c_2}}\\{{a_3}}&{{b_3}}&{{c_3}}\end{array}} \right| = 5$; તો $\left| {\begin{array}{*{20}{c}}{{b_2}{c_3} - {b_3}{c_2}}&{{c_2}{a_3} - {c_3}{a_2}}&{{a_2}{b_3} - {a_3}{b_2}}\\{{b_3}{c_1} - {b_1}{c_3}}&{{c_3}{a_1} - {c_1}{a_3}}&{{a_3}{b_1} - {a_1}{b_3}}\\{{b_1}{c_2} - {b_2}{c_1}}&{{c_1}{a_2} - {c_2}{a_1}}&{{a_1}{b_2} - {a_2}{b_1}}\end{array}} \right|$ નું મૂલ્ય શોધો.

જો $A$ એ $3 \times 3$ શ્રેણિક હોય અને $|A|=2$ હોય,તો $|\operatorname{Adj}(\operatorname{Adj} A)| \operatorname{Adj}(\operatorname{Adj} A) = $ ($A$ માં)

જો $A$ એ $3$ કક્ષાનો ચોરસ શ્રેણિક હોય અને $|A| = 8$ હોય,તો $|adj(A)| = $

ધારો કે $A = \begin{bmatrix} 1 & 2 \\ -5 & 1 \end{bmatrix}$ અને $A^{-1} = xA + yI_2$,(જ્યાં $I_2$ એ $2$ કક્ષાનો એકમ શ્રેણિક છે),તો

શ્રેણિક $A = \begin{bmatrix} 2 & -3 \\ 3 & 5 \end{bmatrix}$ નો એડજોઈન્ટ (adjoint) શોધો.

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