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[理工] [工數] 矩陣問題

[ Grad-ProbAsk ]19 留言, 推噓總分: +5

作者: aboyfun - 發表於 2012/04/27 05:00(12年前)

4^F推ntust661:(a) 一定對阿!04/27 13:13

5^F→ntust661:你可以舉一個 2*2 的對稱矩陣但是有虛數04/27 13:14

6^F→ntust661:[ 1+i 0 ]04/27 13:14

7^F→ntust661:[ 0 1 ]04/27 13:14

8^F→ntust661:特徵值不就有虛數了@@04/27 13:15

9^F→ntust661:所以(c)錯04/27 13:15

10^F→ntust661:[ 1 1 ]04/27 13:16

11^F→ntust661:[ 1 1 ]04/27 13:16

12^F→ntust661:打錯上面那個矩陣不要看XD04/27 13:17

13^F推ntust661:假設一個矩陣 [ a c ; c d ]04/27 13:20

14^F→ntust661:假設有兩重根特徵值 @ 特章向量只有 V = [v1 v2]^T04/27 13:21

15^F→ntust661:冏好像不能04/27 13:22

[理工] 拉氏-終值定理

[ Grad-ProbAsk ]4 留言, 推噓總分: +3

作者: shareing - 發表於 2012/04/17 22:40(12年前)

2^F推ntust661:Routh's criteria?04/17 22:50

[理工] 工數矩陣

[ Grad-ProbAsk ]2 留言, 推噓總分: +1

作者: l634259 - 發表於 2012/04/14 18:00(12年前)

1^F推ntust661:就是對角化啦^^04/14 18:07

2^F→ntust661:standard 意思代表沒有 x1 x2 這種耦合項04/14 18:07

[理工] 孫超群電磁學 ▽f+(u)

[ Grad-ProbAsk ]1 留言, 推噓總分: +1

作者: coldman2001 - 發表於 2012/04/04 19:28(12年前)

1^F推ntust661:你把他先想成Chain Rule來的吧~04/04 19:31

[理工] 工數 ODE

[ Grad-ProbAsk ]23 留言, 推噓總分: +9

作者: ggyy940 - 發表於 2012/04/01 12:11(12年前)

1^F→ntust661:用參數變換也可以阿@@04/01 14:06

4^F推ntust661:一個小方法，把 secx 轉成複數的樣子~04/01 17:39

5^F→ntust661:聽 sq 大的話XD 考四大基本上不要用...04/01 17:40

6^F→ntust661:而且我剛剛嘗試積分真的會積死人囧04/01 17:41

Re: [理工] 工程數學ODE

[ Grad-ProbAsk ]2 留言, 推噓總分: +2

作者: jack0711 - 發表於 2012/03/31 02:29(12年前)

1^F推ntust661:推!03/31 12:17

[理工] 工程數學ODE

[ Grad-ProbAsk ]1 留言, 推噓總分: +1

作者: peacrackers - 發表於 2012/03/29 18:51(12年前)

1^F推ntust661:第一題差一點可以exact >.<03/30 07:27

[理工] 周易線代

[ Grad-ProbAsk ]13 留言, 推噓總分: +3

作者: Nolanly - 發表於 2012/03/28 00:21(12年前)

6^F推ntust661:我覺得不要亂創會比較好~03/28 14:17

7^F→ntust661:除非特別標註03/28 14:17

[理工] [自控] Z轉換閉迴路系統

[ Grad-ProbAsk ]1 留言, 推噓總分: 0

作者: momo504131 - 發表於 2012/03/24 02:14(12年前)

1^F→ntust661:你怎麼反逆轉換的@@...03/28 14:17

[理工] 特徵向量的問題

[ Grad-ProbAsk ]9 留言, 推噓總分: +4

作者: crazy225drag - 發表於 2012/03/23 23:22(12年前)

1^F推ntust661:因為你解錯了@@03/23 23:31

2^F→ntust661:特徵值 -5 , 203/23 23:31

3^F→ntust661:對!03/23 23:41

5^F推ntust661:k1 = 5 打錯了喔03/23 23:44

6^F→ntust661:特徵向量應該是 [ 1 ; -7 ]03/23 23:45

8^F推ntust661:噢對XDD03/24 00:00

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