一个四阶方阵,其行列式的值A=5,则-2A等于多少
如果A为矩阵的话,-2A等于多少
人气:155 ℃ 时间:2020-01-28 16:34:11
解答
4阶行列式值为(-2)的四次方乘上5应该为80,矩阵的话和阶数无关,直接乘就可以了
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