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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मान लीजिए $A = \begin{bmatrix} 3 & 7 \\ 2 & 5 \end{bmatrix}$ और $B = \begin{bmatrix} 6 & 8 \\ 7 & 9 \end{bmatrix}$ है। सत्यापित कीजिए कि $(AB)^{-1} = B^{-1} A^{-1}$।

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

यदि $A = \begin{bmatrix} 1 & -2 & 2 \\ 0 & 2 & -3 \\ 3 & -2 & 4 \end{bmatrix}$ है,तो $A(I + \operatorname{adj} A) = $

यदि $A = \begin{bmatrix} 2 & 3 \\ 1 & 2 \end{bmatrix}$ और $B = \begin{bmatrix} 1 & 0 \\ 3 & 1 \end{bmatrix}$ है,तो $(AB)^{-1} =$

यदि $A = \begin{bmatrix} 1 & -1 & 1 \\ 0 & 2 & -3 \\ 2 & 1 & 0 \end{bmatrix}$,$B = \text{adj}(A)$,और $C = 5A$ है,तो $\frac{|\text{adj}(B)|}{|C|}$ का मान ज्ञात कीजिए।

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