JEE Math Practice Question
The total number of matrices $$A = \left( {\begin{matrix} 0 & {2y} & 1 \\ {2x} & y & { - 1} \\ {2x} & { - y} & 1 \\ \end{matrix} } \right)$$ (x, y $$ \in $$ R,x $$ \ne $$ y) for which ATA = 3I3 is :-
- A.3
- B.4
- C.2
- D.6
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