ધારો કે $A = \begin{bmatrix} 1 & 0 & 0 \\ 5 & 2 & 0 \\ -1 & 6 & 1 \end{bmatrix}$,તો $A$ નો એડજોઈન્ટ (adjoint) શું થાય?

  • A
    $\begin{bmatrix} 2 & -5 & 32 \\ 0 & 1 & -6 \\ 0 & 0 & 2 \end{bmatrix}$
  • B
    $\begin{bmatrix} -1 & 0 & 0 \\ -5 & -2 & 0 \\ 1 & -6 & 1 \end{bmatrix}$
  • C
    $\begin{bmatrix} -1 & 0 & 0 \\ -5 & -2 & 0 \\ 1 & -6 & -1 \end{bmatrix}$
  • D
    આમાંથી કોઈ નહીં

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જો $\begin{bmatrix} 2 & 1 \\ 3 & 2 \end{bmatrix} A = \begin{bmatrix} 1 & 0 \\ 0 & 1 \end{bmatrix}$ હોય,તો શ્રેણિક $A$ શું છે?

જો $A = \begin{bmatrix} 1 & -2 & 2 \\ 2 & -6 & 5 \\ 5 & 0 & 4 \end{bmatrix}$ હોય,તો $\operatorname{Adj} A = $

એક વ્યસ્ત શ્રેણિક $A$ માટે,જો $A(\operatorname{adj} A)=\left[\begin{array}{cc}20 & 0 \\ 0 & 20\end{array}\right]$ હોય,તો $|A|=$

શ્રેણિક $A = \begin{bmatrix} 1 & 1 & 1 \\ 1 & 2 & -3 \\ 2 & -1 & 3 \end{bmatrix}$ માટે,સાબિત કરો કે $A^{3} - 6A^{2} + 5A + 11I = 0$. આથી,$A^{-1}$ શોધો.

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જો $3 A = \begin{bmatrix} 1 & 2 & 2 \\ 2 & 1 & -2 \\ a & 2 & b \end{bmatrix}$ અને $A A^{T} = I$ હોય,તો $\frac{a}{b} + \frac{b}{a}$ ની કિંમત શોધો.

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