જો $A = \begin{bmatrix} \cos x & \sin x \\ -\sin x & \cos x \end{bmatrix}$ હોય,તો $A \cdot (adj(A)) = $

  • A
    $\begin{bmatrix} 1 & 0 \\ 0 & 1 \end{bmatrix}$
  • B
    $\begin{bmatrix} 0 & 1 \\ 1 & 0 \end{bmatrix}$
  • C
    $\begin{bmatrix} 1 & 1 \\ 0 & 0 \end{bmatrix}$
  • D
    $\begin{bmatrix} -2 & 0 \\ 0 & -2 \end{bmatrix}$

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Similar Questions

જો $A = \begin{bmatrix} 1 & -5 \\ -2 & 4 \end{bmatrix}$ હોય, તો $A^{-1} =$ શું થાય?

જો $A = \begin{bmatrix} 3 & 4 \\ 5 & 7 \end{bmatrix}$ હોય,તો $A(adj A) = $

ધારો કે $A$ એ $3 \times 3$ શ્રેણિક છે જેથી $A+A^{T}=O$. જો $A\begin{bmatrix}1\\ -1\\ 0\end{bmatrix}=\begin{bmatrix}3\\ 3\\ 2\end{bmatrix}$, $A^{2}\begin{bmatrix}1\\ -1\\ 0\end{bmatrix}=\begin{bmatrix}-3\\ 19\\ -24\end{bmatrix}$ અને $\det(\text{adj}(2\text{adj}(A+I))) = (2)^\alpha \cdot(3)^\beta \cdot(11)^\gamma$ હોય, તો $\alpha+\beta+\gamma$ ની કિંમત . . . . . . થાય.

જો $A = \begin{bmatrix} \cos \theta & -\sin \theta \\ \sin \theta & \cos \theta \end{bmatrix}$ હોય, તો $\theta = \pi/6$ હોય ત્યારે શ્રેણિક $A^{-3}$ કોના બરાબર થાય?

જો $\text{adj} \begin{bmatrix} 1 & 0 & 2 \\ -1 & 1 & -2 \\ 0 & 2 & 1 \end{bmatrix} = \begin{bmatrix} 5 & m & -2 \\ 1 & 1 & 0 \\ -2 & -2 & n \end{bmatrix}$ હોય, તો $m+n=$

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