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[理工] [自控] 101中央醫工

[ Grad-ProbAsk ]18 留言, 推噓總分: +10

作者: walelahaha - 發表於 2012/02/12 12:42(13年前)

16^F推kimkimkimkim:控制有考這個喔?? 這算是哪章的阿02/13 00:25

[理工] 複數型Fourier級數展開

[ Grad-ProbAsk ]8 留言, 推噓總分: +1

作者: hua780224 - 發表於 2011/09/28 19:29(13年前)

1^F推kimkimkimkim:[新聞] 最愛潘威倫老實胖嘟嘟...-2T,-T,0,T,2T,...09/29 08:14

2^F→kimkimkimkim:我第一行打錯了= =09/29 08:14

3^F→kimkimkimkim:d(t) 你把每一個k項都寫出來...-2T,-T,0,T,2T,...09/29 08:15

4^F→kimkimkimkim:δ(t-kT) =>...+δ(t+2T)+δ(t+T)+δ(t)+δ(t-T)+...09/29 08:16

5^F→kimkimkimkim:可是他範圍只有-T/2 ~ T/2 所以只有在 t = 0時才有09/29 08:17

6^F→kimkimkimkim:δ值瞬間跑出09/29 08:17

[理工] 工數問題幫幫忙~~

[ Grad-ProbAsk ]4 留言, 推噓總分: +1

作者: papaya125 - 發表於 2011/09/22 12:21(13年前)

1^F推kimkimkimkim:第一題你先去把通式推導看一下吧09/22 20:22

2^F→kimkimkimkim:第二題1/(D^2 + 5D) 把1/D提出在用1/D對後面績分09/22 20:24

[理工] [工數] 矩陣

[ Grad-ProbAsk ]2 留言, 推噓總分: +1

作者: hihaka2001 - 發表於 2011/09/18 16:15(13年前)

1^F推kimkimkimkim:先將左邊削成單位矩陣再利用基本矩陣性質移在右邊09/19 08:49

2^F→kimkimkimkim:寫成矩陣09/19 08:49

[理工] 積分問題

[ Grad-ProbAsk ]18 留言, 推噓總分: +2

作者: papaya125 - 發表於 2011/09/17 11:28(13年前)

17^F→kimkimkimkim:........09/18 03:30

[理工] 控制波德圖

[ Grad-ProbAsk ]60 留言, 推噓總分: +11

作者: yy2218 - 發表於 2011/09/15 13:58(13年前)

55^F推kimkimkimkim:這0dB應該只是近似值畫波德圖都是近似值09/16 06:46

56^F→kimkimkimkim:所以波德圖都是近似曲線他說的0dB也是近似09/16 06:47

57^F→kimkimkimkim:應該沒錯吧= =09/16 06:47

Re: [理工] [線代]

[ Grad-ProbAsk ]8 留言, 推噓總分: +3

作者: K7788 - 發表於 2011/09/07 21:07(13年前)

5^F推kimkimkimkim:題目有說u為單位向量09/08 12:24

[理工] [工數] 正交矩陣

[ Grad-ProbAsk ]9 留言, 推噓總分: +4

作者: bizzard - 發表於 2011/08/29 20:00(14年前)

2^F推kimkimkimkim:其實用看的比較快08/30 10:07

3^F推kimkimkimkim:第一行元素[1 -2 1 ]T 再取單位向量08/30 10:11

4^F→kimkimkimkim:1/(根號6)[1 -2 1 ]T08/30 10:12

5^F→kimkimkimkim:當然如果題目要你用Gram-Schmit去做那就照題目08/30 10:14

6^F→kimkimkimkim:如果只是過程需要用到正交矩陣那直接用看的快很多08/30 10:15

[理工] [線代]

[ Grad-ProbAsk ]13 留言, 推噓總分: +2

作者: lai90043 - 發表於 2011/08/23 15:12(14年前)

1^F推kimkimkimkim:2.先算1&2x-1是否為正交基底08/24 01:05

2^F→kimkimkimkim:算後確實為正交基底Y08/24 01:05

3^F→kimkimkimkim:x^(1/2)在與兩個正交向量投影相加即為y08/24 01:08

4^F→kimkimkimkim:則||y-x^(1/2)|| is minimal.08/24 01:08

5^F→kimkimkimkim:minimal => 距離為最短08/24 01:09

6^F推kimkimkimkim:第一題應該是2X2矩陣四個元素為x,y,x,w 令y=3/5x08/24 01:44

7^F→kimkimkimkim:則可分離為三個獨立的矩陣08/24 01:45

[理工] [工數] 逆運算的問題

[ Grad-ProbAsk ]11 留言, 推噓總分: +4

作者: fairwarning - 發表於 2011/08/17 04:51(14年前)

10^F推kimkimkimkim:建議先算1/(D+2i) 再算1/D 應該會比較好算一點08/17 21:10

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