[線代] AB=O
Let A, B denote two n*n matrices satisfying AB=O.
Then in the following, pick up the correct statements.
(a) BA=O
(b) all eigenvalues of BA are 0
(c) (BA)^2 = O
(d) A=O or B=O
(e) rank(A) + rank(B) = n
謝謝
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※ 編輯: mqazz1 來自: 218.166.114.59 (11/18 22:28)
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