已知二阶方阵A的特征值为λ1=2,λ2=-1,则|A2|=__________。 已知二阶方阵A的特征值为λ1=2,λ2=-1,则|A2|=__________。 分类:医学综合 题型:单选题 查看答案
The Cooperative Principle was proposed by The Cooperative Principle was proposed byA. Saussur B. Hallida C. Searl D. Gric 分类:医学综合 题型:单选题 查看答案