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Mathematics · 2024 · 1 mark
CBSE 2024 · Region 5 · Set 3 · Q5
If A = [x, 0; 1, 1] and B = [4, 0; -1, 1], then value of x for which A^2= B is:
If $\displaystyle \mathrm{A}=\left[\begin{array}{ll}x & 0 \\ 1 & 1\end{array}\right]$ and $\displaystyle \mathrm{B}=\left[\begin{array}{cc}4 & 0 \\ -1 & 1\end{array}\right]$, then value of $\displaystyle x$ for which $\displaystyle \mathrm{A}^{2}=\mathrm{B}$ is :
Official answer
(A)
$\displaystyle -2$
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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.