1 2 2
A= 2 1 2
2 2 1
A negatif 1=1/5(A-4I). Calculate A negatif 1
since I equal to 1 0 1
0 1 0
1 0 1
Math question help me Matrix
2007-05-31 7:07 am
回答 (2)
2007-05-31 7:22 am
✔ 最佳答案
4 x I = 4 0 4
0 4 0
4 0 4
A - 4I =
-3 2 -2
2 -3 2
-2 2 -3
A negatif 1=1/5(A-4I)
A negatif 1=
-3/5 2/5 -2/5
2/5 -3/5 2/5
-2/5 2/5 -3/5
2007-05-31 00:05:10 補充：
下面的0.0他寫since I equal to 1 0 10 1 01 0 1是嗎?
參考: 讀精算
2007-05-31 7:28 am
睇死人,我估你個問題係咁
A =
1 2 2
2 1 2
2 2 1
A^(-1) = 1/5 (A - 4I)
where I =
1 0 0
0 1 0
0 0 1
A^(-1) =
－３／５ ２／５ ２／５
２／５ －３／５ ２／５
２／５ ２／５ －３／５
A =
1 2 2
2 1 2
2 2 1
A^(-1) = 1/5 (A - 4I)
where I =
1 0 0
0 1 0
0 0 1
A^(-1) =
－３／５ ２／５ ２／５
２／５ －３／５ ２／５
２／５ ２／５ －３／５
收錄日期: 2021-04-23 17:00:15
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20070530000051KK04771