设三阶方阵A的特征值是1/2,1/3,1/4,对应的特征向量依次是ξ1,ξ1,ξ1,令矩阵P=(ξ1,ξ2,ξ3),则P-1A-1P=_____.
(2 3 4) 本题主要考查的知识点为矩阵的相似对角化.A-1的特征值分别为2,3,4,对应的特征向量为ξ1,ξ2,ξ3,所以有P-1A-1P= (2 3 4)
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