Determinants

Bihar Board Class 12 · Mathematics · 70 past questions

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1. Q21 2025 Set A2025 Set E

   $\dfrac{d}{dx}\left\{\begin{vmatrix} x & x \\ 2 & x \end{vmatrix}\right\} =$

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2. Q22 2025 Set A2025 Set E

   $\dfrac{d}{dx}\left\{\begin{vmatrix} x & 15 \\ 4 & 4 \end{vmatrix}\right\} =$

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3. Q35 2024 Set D

   If $A=\begin{bmatrix}3&-5\\-1&2\end{bmatrix}$ then adjoint $A=$

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4. Q58 2018

   If $\lambda\in R$ and $\Delta=\begin{vmatrix}a&b\\c&d\end{vmatrix}$ then $\lambda\Delta=$

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5. Q61 2018

   Let A be a non-singular matrix of the order $2 \times 2$ then $|adj A| =$ ..........

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