જો $A=\left[\begin{array}{ll}2 & -2 \\ 2 & -3\end{array}\right]$ અને $B=\left[\begin{array}{cc}0 & -1 \\ 1 & 0\end{array}\right]$ હોય,તો $(B^{-1} A^{-1})^{-1} = ?$

  • A
    $\left[\begin{array}{ll}-2 & -2 \\ -3 & -2\end{array}\right]$
  • B
    $\left[\begin{array}{cc}2 & 2 \\ -2 & -3\end{array}\right]$
  • C
    $\left[\begin{array}{cc}3 & -2 \\ 2 & 2\end{array}\right]$
  • D
    $\left[\begin{array}{cc}1 & -1 \\ -2 & 3\end{array}\right]$

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જો $A$ એ $3$ કક્ષાનો શ્રેણિક હોય જેનો નિશ્ચાયક $6$ હોય,તો $\operatorname{det}(\operatorname{adj} A) = $

જો $A = \begin{bmatrix} 1 & 5 \\ \lambda & 10 \end{bmatrix}$,$A^{-1} = \alpha A + \beta I$ અને $\alpha + \beta = -2$ હોય,તો $4\alpha^2 + \beta^2 + \lambda^2$ ની કિંમત શોધો:

જો $A = \begin{bmatrix} 1 & 2 & 3 \\ 1 & 1 & a \\ 2 & 4 & 7 \end{bmatrix}$ અને $B = \begin{bmatrix} 13 & 2 & b \\ -3 & -1 & 2 \\ -2 & 0 & 1 \end{bmatrix}$ હોય,જ્યાં શ્રેણિક $B$ એ શ્રેણિક $A$ નો વ્યસ્ત શ્રેણિક છે,તો $a$ અને $b$ ની કિંમત શોધો.

જો $A = \frac{1}{7} \begin{bmatrix} 3 & -2 & 6 \\ -6 & -3 & 2 \\ -2 & 6 & 3 \end{bmatrix}$ હોય,તો:

જો $F(\alpha) = \begin{bmatrix} \cos \alpha & -\sin \alpha & 0 \\ \sin \alpha & \cos \alpha & 0 \\ 0 & 0 & 1 \end{bmatrix}$,જ્યાં $\alpha \in \mathbb{R}$,તો $[F(\alpha)]^{-1}$ શું થાય?

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