[其他] 不同矩陣相乘
題目:A_m*n = |1 1 0|*|1|
|0 1 0| |0|
|1|
A_2*3 = |1 1 0|
|0 1 0|
B_4*2 = |1 1|
|0 3|
|2 -1|
|0 1|
C_4*3 = ( B_4*2 ) * ( A_2*3)
試求 C_4*3 = ???
答案:C_4*3 = |1|
|0|
|2|
|0|
C_4*3 = |1 1| |1 1 0| 請問版上前輩們,不同矩陣該如何相乘?
|0 3| * |0 1 0| 小弟實在無法下筆,麻煩不吝嗇指導,謝謝!
|2 -1|
|0 1|
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水無常態,兵無常勢。
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※ 發信站: 批踢踢實業坊(ptt.cc)
◆ From: 1.165.196.40
推
09/17 19:02, , 1F
09/17 19:02, 1F
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09/17 19:03, , 2F
09/17 19:03, 2F
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09/17 19:05, , 3F
09/17 19:05, 3F
小弟真的不會,麻煩不吝嗇指導,謝謝!
※ 編輯: pigheadthree 來自: 1.165.196.40 (09/17 19:10)
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09/17 19:18, , 4F
09/17 19:18, 4F
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09/17 19:22, , 5F
09/17 19:22, 5F
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09/17 19:30, , 6F
09/17 19:30, 6F
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09/17 19:31, , 7F
09/17 19:31, 7F
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09/17 19:31, , 8F
09/17 19:31, 8F
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09/17 19:45, , 9F
09/17 19:45, 9F
C_4*3 = |1 1| |1 1 0|
|0 3| * |0 1 0|
|2 -1|
|0 1|
= | (1,1)。(1,0) (1,1)。(1,1) (1,1)。(0,0) |
| (0,3)。(1,0) (0,3)。(1,1) (0,3)。(0,0) |
|(2,-1)。(1,0) (2,-1)。(1,1) (2,-1)。(0,0)|
| (0,1)。(1,0) (0,1)。(1,1) (0,1)。(0,0) |
= |1 2 0| * |1| = |(1,2,0)。(1,0,1)| = |1|
|0 3 0| |0| |(0,3,0)。(1,0,1)| |0|
|2 1 0| |1| |(2,1,0)。(1,0,1)| |2|
|0 1 0| |(0,1,0)。(1,0,1)| |0|
呼!總算算出來了....................
※ 編輯: pigheadthree 來自: 1.165.196.40 (09/17 20:01)
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09/17 19:55, , 10F
09/17 19:55, 10F
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09/17 20:03, , 11F
09/17 20:03, 11F
推
09/17 20:15, , 12F
09/17 20:15, 12F
抱歉,之前還有個定義沒寫到,修正。
※ 編輯: pigheadthree 來自: 1.165.196.40 (09/17 20:18)
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09/17 20:18, , 13F
09/17 20:18, 13F
推
09/17 21:09, , 14F
09/17 21:09, 14F
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09/17 21:39, , 15F
09/17 21:39, 15F
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09/17 22:09, , 16F
09/17 22:09, 16F
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09/17 22:10, , 17F
09/17 22:10, 17F
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09/17 22:11, , 18F
09/17 22:11, 18F
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09/17 22:41, , 19F
09/17 22:41, 19F
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09/17 22:50, , 20F
09/17 22:50, 20F
推
09/17 23:14, , 21F
09/17 23:14, 21F
推
09/17 23:38, , 22F
09/17 23:38, 22F
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09/18 00:02, , 23F
09/18 00:02, 23F
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09/18 00:02, , 24F
09/18 00:02, 24F
推
09/18 00:50, , 25F
09/18 00:50, 25F
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09/18 00:51, , 26F
09/18 00:51, 26F
推
09/18 00:53, , 27F
09/18 00:53, 27F
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09/18 01:11, , 28F
09/18 01:11, 28F
推
09/18 05:04, , 29F
09/18 05:04, 29F
※ 編輯: pigheadthree 來自: 1.165.196.40 (09/18 19:40)
推
09/18 22:40, , 30F
09/18 22:40, 30F
→
01/02 15:32,
5年前
, 31F
01/02 15:32, 31F
→
07/07 11:26,
4年前
, 32F
07/07 11:26, 32F
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