JEE Mains · Maths · STD 12 - 3 and 4 . metrices and determinant
The total number of matrices \(A = \left[ {\begin{array}{*{20}{c}}
0&{2x}&{2x}\\
{2y}&y&{ - y}\\
1&{ - 1}&1
\end{array}} \right];\,\left( {x,y \in R,\,x \ne y} \right)\) for which \({A^T}A = 3{I_3}\)
- A \(6\)
- B \(2\)
- C \(3\)
- D \(4\)
Answer & Solution
Correct Answer
(D) \(4\)
Step-by-step Solution
Detailed explanation
\({A^T}A = 3{I_3}\)…
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