શ્રેણિક $A = \left[\begin{array}{ccc}1 & -1 & 2 \\ 2 & 3 & 5 \\ -2 & 0 & 1\end{array}\right]$ નો એડજોઈન્ટ (adjoint) શોધો.

  • A
    $\left[\begin{array}{rrr}3 & 1 & 11 \\ -12 & 5 & -1 \\ 6 & 2 & 5\end{array}\right]$
  • B
    $\left[\begin{array}{rrr}3 & -1 & -11 \\ -12 & 5 & -1 \\ -6 & 2 & 5\end{array}\right]$
  • C
    $\left[\begin{array}{rrr}-3 & 1 & -11 \\ -12 & 5 & -1 \\ -6 & -2 & 5\end{array}\right]$
  • D
    $\left[\begin{array}{rrr}3 & 1 & -11 \\ -12 & 5 & -1 \\ 6 & 2 & 5\end{array}\right]$

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જો $A = \begin{bmatrix} 2 & 1 & 0 \\ 0 & 2 & 1 \\ 1 & 0 & 2 \end{bmatrix}$ હોય,તો $|\operatorname{adj} A|$ ની કિંમત શોધો.

જો $A = \begin{bmatrix} 0 & 3 \\ 2 & 0 \end{bmatrix}$ અને $A^{-1} = \lambda (adj(A))$ હોય,તો $\lambda = $

શ્રેણિક $\left[\begin{array}{cc}-1 & 5 \\ -3 & 2\end{array}\right]$ નો વ્યસ્ત શ્રેણિક શોધો (જો તેનું અસ્તિત્વ હોય તો).

જો $A$ એ $3 \times 3$ શ્રેણિક હોય અને $|A|=\frac{1}{2}$ હોય, તો $|A^{-1}(\operatorname{Adj}(\operatorname{Adj} A))|^{-1} = $

નીચેનામાંથી કયો શ્રેણિક વ્યસ્ત કરી શકાય તેવો (invertible) છે?
$A_{1}=\begin{bmatrix} 4 & 2 \\ 2 & 1 \end{bmatrix}$
$A_{2}=\begin{bmatrix} -1 & -2 & 3 \\ 4 & 5 & 7 \\ 2 & 4 & -6 \end{bmatrix}$
$A_{3}=\begin{bmatrix} 1 & 0 & 0 \\ 5 & 2 & 1 \\ 7 & 2 & 1 \end{bmatrix}$
$A_{4}=\begin{bmatrix} 1 & 0 & 1 \\ 0 & 2 & 3 \\ 1 & 2 & 1 \end{bmatrix}$

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