Mathematics, 17.10.2021 16:50 mfweldon64

cho A là một ma trận vuông cấp 3 có det (A) = 3 và $A^{-1}$ = $\frac{1}{det (A)}$ ×B. Tính det ( $B^{2}$ )

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cho A là một ma trận vuông cấp 3 có det (A) = 3 và = ×B. Tính det ()...