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【E資格】3次正方行列の行列式(サラスの公式)

Last updated at Posted at 2025-06-13

3次正方行列の行列式は、

image.png

によって計算できます(サラスの公式とも呼ばれています)。

※数学において、「det」とは、行列式を表す記号であり、英語の「determinant」の略です。

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