यदि $A = \begin{bmatrix} k & 2 \\ -2 & -k \end{bmatrix}$ है,तो $k =$ के लिए $A^{-1}$ का अस्तित्व नहीं है।

  • A
    $3$
  • B
    $\pm 2$
  • C
    $0$
  • D
    $\pm 1$

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आव्यूह $\left[\begin{array}{lll}0 & 1 & 2 \\ 1 & 2 & 3 \\ 3 & 1 & 1\end{array}\right]$ का व्युत्क्रम आव्यूह ज्ञात कीजिए।

यदि $A = \begin{bmatrix} \cos \theta & -\sin \theta & 0 \\ \sin \theta & \cos \theta & 0 \\ 0 & 0 & 1 \end{bmatrix}$ है,तो $\operatorname{adj} A = $

यदि $A = \begin{bmatrix} 1 & 0 & 2 \\ -1 & 1 & -2 \\ 0 & 2 & 1 \end{bmatrix}$ और $\text{adj } A = \begin{bmatrix} 5 & x & -2 \\ 1 & 1 & 0 \\ -2 & -2 & y \end{bmatrix}$ है,तो $x+y$ का मान ज्ञात कीजिए।

यदि $A = \begin{bmatrix} i & 0 \\ 0 & i/2 \end{bmatrix}$ जहाँ $i = \sqrt{-1}$ है,तो $A^{-1} = $

यदि $A = \begin{bmatrix} 2 & -3 \\ 5 & -7 \end{bmatrix}$ है,तो $2A - 3A^{-1} = $

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