[理工] [線代] 矩陣的秩
1.Let A,B be 2x2 matrices over R with AB=0 and BA!=0 .
Determine the rank of BA.
2.Let A be m by n matrix,P be an inervertible m by m matrix,
and Q be an n by n matrix.
Which of the following is true?
(1)rank(AQ)=nullity(A)
(2)rank(AQ)=rank(A)
(3)rank(PA)=rank(P)
(4)rank(PA)=rank(A)
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◆ From: 59.127.250.83
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10/16 22:21, , 1F
10/16 22:21, 1F
推
10/16 22:24, , 2F
10/16 22:24, 2F
→
10/16 22:24, , 3F
10/16 22:24, 3F
→
10/16 23:00, , 4F
10/16 23:00, 4F
※ 編輯: movo11 來自: 59.127.250.83 (10/17 16:42)
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