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已知方阵A为四阶方阵,且行列式|A |=2,求下列行列式的值: (1)|-A| (2)|2A|
已知方阵A为四阶方阵,且行列式|A |=2,求下列行列式的值: (1)|-A| (2)|2A| (3)|AAT| (4)|A2|
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已知方阵A为四阶方阵,且行列式|A |=2,求下列行列式的值: (1)|-A| (2)|2A| (3)|AAT| (4)|A2|
已知A为三阶方阵,且满足A2一A一2E=O,行列式0<|A|<5,则行列式|A+2E|=_____.