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\det {{ 2, 0, 0 }, {0, 3, 0 }, {0, 0, 4 }} . (Diagonale — prodotto degli elementi diagonali.)
\det {{ 2, 0, 0 }, {0, 3, 0 }, {0, 0, 4 }} . (Diagonale — prodotto degli elementi diagonali.)
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