Let \( A \) be a matrix of order \( 2 \times 2 \) such that \( A^{2}=0 \). \( \operatorname{tr}(....

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Let \( A \) be a matrix of order \( 2 \times 2 \) such that \( A^{2}=0 \).
\( \mathrm{P} \)
\( \operatorname{tr}(A) \) is equal to
W
(1) 1
(2) 0
(3) -1
(4) None of these


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