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Mathematics · 2023 · 1 mark
CBSE 2023 · Region 5 · Set 1 · Q4
If A = [1, 0; 2, 1], B = [x, 0; 1, 1] and A = B^2, then x equals
If $\displaystyle \mathrm{A}=\left[\begin{array}{ll}1 & 0 \\ 2 & 1\end{array}\right], \mathrm{B}=\left[\begin{array}{ll}x & 0 \\ 1 & 1\end{array}\right]$ and $\displaystyle \mathrm{A}=\mathrm{B}^{2}$, then $\displaystyle x$ equals
Official answer
(C)
$\displaystyle 1$
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CBSE Class 12 Mathematics past-paper question from the 2023 board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.