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The matrix `A={:[((1)/(sqrt(2)),(1)/(sqrt(2))),((-1)/(sqrt(2)),(-1)/(sqrt(2)))]:}` isA. idempotentB. orthogonalC. nilpotentD. involutory |
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Answer» Correct Answer - 3 `A^(2)=[{:(" "(1)/(2)-(1)/(2)," "(1)/(2)-(1)/(2)),(-(1)/(2)+(1)/(2),-(1)/(2)+(1)/(2)):}]` `=[(o,o),(o,o)]` |
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