Matrices

Bihar Board Class 12 · Mathematics · 84 past questions

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1. Q2 2026 Set A2026 Set H2026 Set E2026 Set C2026 Set F2026 Set D2026 Set J2026 Set B2021 Set J2021 Set I

   If $A = \begin{bmatrix} 1 & -1 \\ -1 & 1 \end{bmatrix}$, then $A^3 =$

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2. Q7 2026 Set A2026 Set H2026 Set E2026 Set C2026 Set F2026 Set D2026 Set J2026 Set B2021 Set J2021 Set I

   If $A=\begin{bmatrix}\cos\alpha & \sin\alpha\\ -\sin\alpha & \cos\alpha\end{bmatrix}$ and $A+A'=I$ then…

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3. Q60 2021 Set I

   If $A=\begin{bmatrix}1&1&1\\1&1&1\\1&1&1\end{bmatrix}$, then $A^2 =$

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4. Q61 2021 Set I

   $\begin{bmatrix} 1 & 0 \\ 0 & 1 \end{bmatrix} + \begin{bmatrix} 0 & 1 \\ 1 & 0 \end{bmatrix} =$

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5. Q62 2021 Set J2021 Set I

   Matrix $\begin{bmatrix}a&h&g\\h&b&f\\g&f&c\end{bmatrix}$ is

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6. Q63 2021 Set J2021 Set I

   $A$ is a square matrix, then $A+A'$ is necessarily

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7. Q64 2021 Set J2021 Set I

   If $A=\begin{bmatrix}\lambda&0\\1&1\end{bmatrix}$, $B=\begin{bmatrix}1&0\\2&1\end{bmatrix}$ and $A^2=B$, then…

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8. Q65 2021 Set J2021 Set I

   If $A=\begin{bmatrix}1&0\\0&1\end{bmatrix}$, then

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9. Q66 2021 Set J2021 Set I

   Find the value of $x$ from the following…

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10. Q67 2021 Set J2021 Set I

    If $A = \begin{bmatrix} 4\alpha & 0 \\ 5 & 1 \end{bmatrix}$…

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11. Q68 2021 Set J

    If $A = \begin{bmatrix} 1 & 1 & 1 \\ 1 & 1 & 1 \\ 1 & 1 & 1 \end{bmatrix}$, then $A^2 =$

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12. Q69 2021 Set J

    $\begin{bmatrix}1&0\\0&1\end{bmatrix}+\begin{bmatrix}0&1\\1&0\end{bmatrix}=$

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