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Mathematics · 2024 · 1 mark
CBSE 2024 · Region 4 · Set 1 · Q2
Given that A^-1=1/7 [2, 1; -3, 2], matrix A is:
Given that $\displaystyle \mathrm{A}^{-1}=\frac{1}{7}\left[\begin{array}{cc}2 & 1 \\ -3 & 2\end{array}\right]$, matrix A is :
Official answer
(B)
$\displaystyle \left[\begin{array}{cc}2 & -1 \\ 3 & 2\end{array}\right]$
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CBSE Class 12 Mathematics past-paper question from the 2024 board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.