Mathematics · 2022
JEE Main · 26 July 2022, Shift 2 · Q3
Let A= [1; 1; 1] and B= [9^2, -10^2, 11^2; 12^2, 13^2, -14^2; -15^2, 16^2, 17^2], then the value of A^′ B A is:
Let $\displaystyle A=\left[\begin{array}{l}1 \\ 1 \\ 1\end{array}\right]$ and $\displaystyle B=\left[\begin{array}{ccc}9^2 & -10^2 & 11^2 \\ 12^2 & 13^2 & -14^2 \\ -15^2 & 16^2 & 17^2\end{array}\right]$, then the value of $\displaystyle A^{\prime} B A$ is:
Official answer
(4)
$\displaystyle 539$
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JEE Main 2022 Mathematics question, with the answer from NTA’s final answer key. Where our answers come from.