鹽水混合模型試驗(yàn)報(bào)告

1、大型企業(yè)經(jīng)典管理資料模板，WORD 文檔，歡迎下載交流分享一個(gè)蘋果，各得一個(gè)蘋果，分享一種思想，各得兩種思想。分享是件快樂(lè)的事件，樂(lè)于分享的人，事業(yè)更容易成功。鹽水混合模型試驗(yàn)報(bào)告一、實(shí)驗(yàn)?zāi)康?. 熟悉 MATLAB的運(yùn)行環(huán)境 .2. 學(xué)會(huì)使用 MATLAB作圖 .3. 學(xué)會(huì)使用 MATLAB編程 .二、實(shí)驗(yàn)內(nèi)容實(shí)驗(yàn)一求解下列微分方程（組）1. 簡(jiǎn)單微分方程1） yyx2, y 02, y 11 ；2） (1x) y2 y4, y 00, y 12 y 10 ；2.特殊微分方程.2）單擺運(yùn)動(dòng)方程u8sin u0 ，用圖形表示其解。3.微分方程組1）線性微分方程組X AX ，其中矩陣A 的定義如

2、下：01 02 1,434.361 2 12）非線性微分方程組.a) xy x2 , yx;.x 4y.4xxy .b) xxy , yy實(shí)驗(yàn)二鹽水混合問(wèn)題一個(gè)圓柱形的容器，內(nèi)裝350升均勻混合的鹽水溶液。如果純水以每秒14 升的速度從容器頂部流入，同時(shí)，容器內(nèi)的混合的鹽水以每秒10.5 升的速度從容器底部流出。開始時(shí)，容器內(nèi)鹽的含量為7 千克。求經(jīng)過(guò)時(shí)間 t 后容器內(nèi)鹽的含量。三、實(shí)驗(yàn)環(huán)境Windows 操作系統(tǒng) ;MATLAB 7.0.四、實(shí)驗(yàn)過(guò)程1.1) dsolve(D2y=y+x-2, x)dsolve(D2y=y+x-2,y(0)=2,y(1)=1,x)ans =2 - x2) d

3、solve(1+x)*D2y=(2*y-4),x) dsolve(1+x)*D2y=(2*y-4),y(0)=0,y(1)-2*Dy(1)=0,x) ans =大型企業(yè)經(jīng)典管理資料模板，WORD 文檔，歡迎下載交流/ x|/|11/22 + | 2 | -dy bessely(1, 2 (- 2 x - 2)|/1/21/2 2y(1) bessely(1, 2 2(- y - 1) (y + 1)1/21/21/2bessely(1, 4 i) (x + 1)(bessely(1, 2 2i) + 2 2bessely(0, 4 i) i -/|1/2|1/22bessely(1, 4 i)

4、 | / | bessely(1, 2 2i)|/0|/| 1/21/22|1| 2+ 2bessely(1, 4 i)|-dy -|/1/21/2 2y(1) bessely(1, 2 2(- y - 1) (y + 1)1/1/22 |12bessely(1, 4 i)| -dy -/1/21/2 2y(1) bessely(1, 2 2(- y - 1) (y + 1)0/1/2|12 2bessely(0, 4 i) bessely(1, 4 i) | -d/1/21/22分享一個(gè)蘋果，各得一個(gè)蘋果，分享一種思想，各得兩種思想。分享是件快樂(lè)的事件，樂(lè)于分享的人，事業(yè)更容易成功。y(1)

5、 bessely(1, 2 2(- y - 1)(y +1)1/2y i + 2 2bessely(0, 4 i) bessely(1, 4 i)1 /| |1| | -dy i | | -/1/21/2 2| |y(1) bessely(1, 2 2(- y - 1) (y + 1)/ /|1/21/2| 2 bessely(1, 2 (- 2 x - 2) (x + 1)|/1|/|1/21/22|1| 2- 2bessely(1, 4 i)|-dy +|/1/21/2 2y(1) bessely(1, 2 2(- y - 1)(y + 1)0/1/2|1bessely(1, 2 2i)

6、bessely(1, 4 i)| -dy/1/21/2 2y(1) bessely(1, 2 2(- y - 1) (y + 1)1/1/2|+ 2 2bessely(0, 4 i) bessely(1, 4 i)|/大型企業(yè)經(jīng)典管理資料模板，WORD 文檔，歡迎下載交流y(1) | |1| |-dy i | | /1/21/2 2| |bessely(1, 2 2(- y - 1) (y + 1)/ /|1/2| 1/21/22| bessely(1, 2 2i) | 2+ 2bessely(1, 4 i)|0/|1| -dy -/1/21/2 2y(1) bessely(1, 2 2(-

7、y - 1) (y + 1)1/1/22 |12bessely(1, 4 i)| -dy -/1/21/2 2y(1) bessely(1, 2 2(- y - 1) (y + 1)0/1/2|12 2bessely(0, 4 i) bessely(1, 4 i)| -d/1/21/22y(1) bessely(1, 2 2(- y - 1)(y +1)分享一個(gè)蘋果，各得一個(gè)蘋果，分享一種思想，各得兩種思想。分享是件快樂(lè)的事件，樂(lè)于分享的人，事業(yè)更容易成功。1/2y i + 2 2bessely(0, 4 i) bessely(1, 4 i)1 /| |1| | -dy i | |/1/21/

8、2 2| |y(1) bessely(1, 2 2(- y - 1) (y + 1)/ /.0 表示為關(guān)于， x,y 的函數(shù)，再表示為關(guān)于 t 變量的一階微分方2. 先做變換，將 u 8sin u程syms s tf=-8*sin(s)/t;a=16.0;b=16.0;x0=-8;y0=-8;m=40;n=40;h1=a/m;h2=b/n;holdfor i=1:ms=x0+(i-1)*h1;for j=1:nt=y0+(j-1)*h2;d=eval(f);y1=t+2/3*h1*d;if abs(y1-t)2/3*h2x1=s+1/d*h2*2/3;plot(s,x1,t,t+h2*2/3)

9、elseplot(s,s+h1*2/3,t,y1)endendendtitle(d2u/dx=-8sinx);xlabel(x);ylabel(y)則可求出其斜率場(chǎng)圖像如下：大型企業(yè)經(jīng)典管理資料模板，WORD 文檔，歡迎下載交流2du/dx=-8sinx86420y-2-4-6-8-10-8-6-4-202468-10x3.1）A1: x1,x2=dsolve(Dx1=2*x1+x2,Dx2=-3*x1+6*x2)x1 =(C1*exp(5*t)/3 + C2*exp(3*t)x2 =C1*exp(5*t) + C2*exp(3*t)2)A2: x1,x2,x3=dsolve(Dx1=x2,D

10、x2=4*x1+3*x2-4*x3,Dx3=x1+2*x2+x3)x1 =(3840*C5*exp(5*t + 12*t*(27(1/2)*1075(1/2)/27 + 170/27)(1/3) - 9*t*(27(1/2)*1075(1/2)/27 + 170/27)(2/3)/(9*(27(1/2)*1075(1/2)/27 + 170/27)(1/3) -1920*C3*cos(5*3(1/2)*t+9*3(1/2)*t*(27(1/2)*1075(1/2)/27+170/27)(2/3)/(18*(27(1/2)*1075(1/2)/27+170/27)(1/3)*exp(24*t*(

11、27(1/2)*1075(1/2)/27 + 170/27)(1/3) - 5*t + 9*t*(27(1/2)*1075(1/2)/27 + 170/27)(2/3)/(18*(27(1/2)*1075(1/2)/27 + 170/27)(1/3) +1920*C4*sin(5*3(1/2)*t+9*3(1/2)*t*(27(1/2)*1075(1/2)/27+170/27)(2/3)/(18*(27(1/2)*1075(1/2)/27+170/27)(1/3)*exp(24*t*(27(1/2)*1075(1/2)/27 + 170/27)(1/3) - 5*t + 9*t*(27(1/2

12、)*1075(1/2)/27 + 170/27)(2/3)/(18*(27(1/2)*1075(1/2)/27 + 170/27)(1/3) -330*C5*exp(5*t+12*t*(27(1/2)*1075(1/2)/27+170/27)(1/3)-9*t*(27(1/2)*1075(1/2)/27+170/27)(2/3)/(9*(27(1/2)*1075(1/2)/27+170/27)(1/3)*(27(1/2)*1075(1/2)/27+170/27)(1/3)+1998*C5*exp(5*t+分享一個(gè)蘋果，各得一個(gè)蘋果，分享一種思想，各得兩種思想。分享是件快樂(lè)的事件，樂(lè)于分享的人，

13、事業(yè)更容易成功。12*t*(27(1/2)*1075(1/2)/27 + 170/27)(1/3) - 9*t*(27(1/2)*1075(1/2)/27 + 170/27)(2/3)/(9*(27(1/2)*1075(1/2)/27 + 170/27)(1/3)*(27(1/2)*1075(1/2)/27 + 170/27)(2/3) + 324*C5*exp(5*t + 12*t*(27(1/2)*1075(1/2)/27 + 170/27)(1/3) -9*t*(27(1/2)*1075(1/2)/27 + 170/27)(2/3)/(9*(27(1/2)*1075(1/2)/27 +

14、170/27)(1/3)*(27(1/2)*1075(1/2)/27 + 170/27)(4/3) - 165*C4*sin(5*3(1/2)*t +9*3(1/2)*t*(27(1/2)*1075(1/2)/27+170/27)(2/3)/(18*(27(1/2)*1075(1/2)/27+170/27)(1/3)*exp(24*t*(27(1/2)*1075(1/2)/27+170/27)(1/3)-5*t+9*t*(27(1/2)*1075(1/2)/27 + 170/27)(2/3)/(18*(27(1/2)*1075(1/2)/27 + 170/27)(1/3)*(27(1/2)*1

15、075(1/2)/27 + 170/27)(1/3) - 1998*C4*sin(5*3(1/2)*t +9*3(1/2)*t*(27(1/2)*1075(1/2)/27+170/27)(2/3)/(18*(27(1/2)*1075(1/2)/27+170/27)(1/3)*exp(24*t*(27(1/2)*1075(1/2)/27+170/27)(1/3)-5*t+9*t*(27(1/2)*1075(1/2)/27 + 170/27)(2/3)/(18*(27(1/2)*1075(1/2)/27 + 170/27)(1/3)*(27(1/2)*1075(1/2)/27 + 170/27)(

16、2/3) + 162*C4*sin(5*3(1/2)*t +9*3(1/2)*t*(27(1/2)*1075(1/2)/27+170/27)(2/3)/(18*(27(1/2)*1075(1/2)/27+170/27)(1/3)*exp(24*t*(27(1/2)*1075(1/2)/27+170/27)(1/3)-5*t+9*t*(27(1/2)*1075(1/2)/27+170/27)(2/3)/(18*(27(1/2)*1075(1/2)/27+170/27)(1/3)*(27(1/2)*1075(1/2)/27 + 170/27)(4/3) + 1920*3(1/2)*C4*cos(5

17、*3(1/2)*t+9*3(1/2)*t*(27(1/2)*1075(1/2)/27+170/27)(2/3)/(18*(27(1/2)*1075(1/2)/27+170/27)(1/3)*exp(24*t*(27(1/2)*1075(1/2)/27 + 170/27)(1/3) - 5*t + 9*t*(27(1/2)*1075(1/2)/27 + 170/27)(2/3)/(18*(27(1/2)*1075(1/2)/27 + 170/27)(1/3) +1920*3(1/2)*C3*sin(5*3(1/2)*t+9*3(1/2)*t*(27(1/2)*1075(1/2)/27+170/2

18、7)(2/3)/(18*(27(1/2)*1075(1/2)/27+170/27)(1/3)*exp(24*t*(27(1/2)*1075(1/2)/27 + 170/27)(1/3) - 5*t + 9*t*(27(1/2)*1075(1/2)/27 + 170/27)(2/3)/(18*(27(1/2)*1075(1/2)/27 + 170/27)(1/3) + 22*27(1/2)*1075(1/2)*C5*exp(5*t + 12*t*(27(1/2)*1075(1/2)/27 + 170/27)(1/3) - 9*t*(27(1/2)*1075(1/2)/27 + 170/27)(2

19、/3)/(9*(27(1/2)*1075(1/2)/27 + 170/27)(1/3) +165*C3*cos(5*3(1/2)*t+9*3(1/2)*t*(27(1/2)*1075(1/2)/27+170/27)(2/3)/(18*(27(1/2)*1075(1/2)/27+170/27)(1/3)*exp(24*t*(27(1/2)*1075(1/2)/27+170/27)(1/3)-5*t+9*t*(27(1/2)*1075(1/2)/27 + 170/27)(2/3)/(18*(27(1/2)*1075(1/2)/27 + 170/27)(1/3)*(27(1/2)*1075(1/2)

20、/27 + 170/27)(1/3) + 1998*C3*cos(5*3(1/2)*t +9*3(1/2)*t*(27(1/2)*1075(1/2)/27+170/27)(2/3)/(18*(27(1/2)*1075(1/2)/27+170/27)(1/3)*exp(24*t*(27(1/2)*1075(1/2)/27+170/27)(1/3)-5*t+9*t*(27(1/2)*1075(1/2)/27 + 170/27)(2/3)/(18*(27(1/2)*1075(1/2)/27 + 170/27)(1/3)*(27(1/2)*1075(1/2)/27 + 170/27)(2/3) - 1

21、62*C3*cos(5*3(1/2)*t +9*3(1/2)*t*(27(1/2)*1075(1/2)/27+170/27)(2/3)/(18*(27(1/2)*1075(1/2)/27+170/27)(1/3)*exp(24*t*(27(1/2)*1075(1/2)/27+170/27)(1/3)-5*t+9*t*(27(1/2)*1075(1/2)/27 + 170/27)(2/3)/(18*(27(1/2)*1075(1/2)/27 + 170/27)(1/3)*(27(1/2)*1075(1/2)/27 + 170/27)(4/3) + 165*3(1/2)*C4*cos(5*3(1/

22、2)*t +9*3(1/2)*t*(27(1/2)*1075(1/2)/27+170/27)(2/3)/(18*(27(1/2)*1075(1/2)/27+170/27)(1/3)*exp(24*t*(27(1/2)*1075(1/2)/27+170/27)(1/3)-5*t+9*t*(27(1/2)*1075(1/2)/27 + 170/27)(2/3)/(18*(27(1/2)*1075(1/2)/27 + 170/27)(1/3)*(27(1/2)*1075(1/2)/27 + 170/27)(1/3) - 162*3(1/2)*C4*cos(5*3(1/2)*t +9*3(1/2)*t

23、*(27(1/2)*1075(1/2)/27+170/27)(2/3)/(18*(27(1/2)*1075(1/2)/27+170/27)(1/3)*exp(24*t*(27(1/2)*1075(1/2)/27+170/27)(1/3)-5*t+9*t*(27(1/2)*1075(1/2)/27+170/27)(2/3)/(18*(27(1/2)*1075(1/2)/27+大型企業(yè)經(jīng)典管理資料模板，WORD 文檔，歡迎下載交流170/27)(1/3)*(27(1/2)*1075(1/2)/27+ 170/27)(4/3) + 165*3(1/2)*C3*sin(5*3(1/2)*t+9*3(1

24、/2)*t*(27(1/2)*1075(1/2)/27+170/27)(2/3)/(18*(27(1/2)*1075(1/2)/27+170/27)(1/3)*exp(24*t*(27(1/2)*1075(1/2)/27+170/27)(1/3)-5*t+9*t*(27(1/2)*1075(1/2)/27 + 170/27)(2/3)/(18*(27(1/2)*1075(1/2)/27 + 170/27)(1/3)*(27(1/2)*1075(1/2)/27 + 170/27)(1/3) - 162*3(1/2)*C3*sin(5*3(1/2)*t +9*3(1/2)*t*(27(1/2)*1

25、075(1/2)/27+170/27)(2/3)/(18*(27(1/2)*1075(1/2)/27+170/27)(1/3)*exp(24*t*(27(1/2)*1075(1/2)/27+170/27)(1/3)-5*t+9*t*(27(1/2)*1075(1/2)/27+170/27)(2/3)/(18*(27(1/2)*1075(1/2)/27+170/27)(1/3)*(27(1/2)*1075(1/2)/27+170/27)(4/3)-11*27(1/2)*1075(1/2)*C3*cos(5*3(1/2)*t+9*3(1/2)*t*(27(1/2)*1075(1/2)/27+170

26、/27)(2/3)/(18*(27(1/2)*1075(1/2)/27+170/27)(1/3)*exp(24*t*(27(1/2)*1075(1/2)/27 + 170/27)(1/3) - 5*t + 9*t*(27(1/2)*1075(1/2)/27 + 170/27)(2/3)/(18*(27(1/2)*1075(1/2)/27 + 170/27)(1/3) +11*27(1/2)*1075(1/2)*C4*sin(5*3(1/2)*t+9*3(1/2)*t*(27(1/2)*1075(1/2)/27+170/27)(2/3)/(18*(27(1/2)*1075(1/2)/27+170

27、/27)(1/3)*exp(24*t*(27(1/2)*1075(1/2)/27 + 170/27)(1/3) - 5*t + 9*t*(27(1/2)*1075(1/2)/27 + 170/27)(2/3)/(18*(27(1/2)*1075(1/2)/27 + 170/27)(1/3) + 11*3(1/2)*27(1/2)*1075(1/2)*C4*cos(5*3(1/2)*t + 9*3(1/2)*t*(27(1/2)*1075(1/2)/27 +170/27)(2/3)/(18*(27(1/2)*1075(1/2)/27+170/27)(1/3)*exp(24*t*(27(1/2)*

28、1075(1/2)/27 + 170/27)(1/3) - 5*t + 9*t*(27(1/2)*1075(1/2)/27 + 170/27)(2/3)/(18*(27(1/2)*1075(1/2)/27 + 170/27)(1/3) + 11*3(1/2)*27(1/2)*1075(1/2)*C3*sin(5*3(1/2)*t + 9*3(1/2)*t*(27(1/2)*1075(1/2)/27 +170/27)(2/3)/(18*(27(1/2)*1075(1/2)/27+170/27)(1/3)*exp(24*t*(27(1/2)*1075(1/2)/27+170/27)(1/3)-5*

29、t+9*t*(27(1/2)*1075(1/2)/27 + 170/27)(2/3)/(18*(27(1/2)*1075(1/2)/27 + 170/27)(1/3)/(1458*(27(1/2)*1075(1/2)/27 + 170/27)(2/3)x2 =-(6510*C5*exp(5*t + 12*t*(27(1/2)*1075(1/2)/27 + 170/27)(1/3) - 9*t*(27(1/2)*1075(1/2)/27 + 170/27)(2/3)/(9*(27(1/2)*1075(1/2)/27 + 170/27)(1/3) -3255*C3*cos(5*3(1/2)*t+9

30、*3(1/2)*t*(27(1/2)*1075(1/2)/27+170/27)(2/3)/(18*(27(1/2)*1075(1/2)/27+170/27)(1/3)*exp(24*t*(27(1/2)*1075(1/2)/27 + 170/27)(1/3) - 5*t + 9*t*(27(1/2)*1075(1/2)/27 + 170/27)(2/3)/(18*(27(1/2)*1075(1/2)/27 + 170/27)(1/3) +3255*C4*sin(5*3(1/2)*t+9*3(1/2)*t*(27(1/2)*1075(1/2)/27+170/27)(2/3)/(18*(27(1/

31、2)*1075(1/2)/27+170/27)(1/3)*exp(24*t*(27(1/2)*1075(1/2)/27 + 170/27)(1/3) - 5*t + 9*t*(27(1/2)*1075(1/2)/27 + 170/27)(2/3)/(18*(27(1/2)*1075(1/2)/27 + 170/27)(1/3) -570*C5*exp(5*t+12*t*(27(1/2)*1075(1/2)/27+170/27)(1/3)-9*t*(27(1/2)*1075(1/2)/27+170/27)(2/3)/(9*(27(1/2)*1075(1/2)/27+170/27)(1/3)*(2

32、7(1/2)*1075(1/2)/27+170/27)(1/3)+756*C5*exp(5*t+12*t*(27(1/2)*1075(1/2)/27 + 170/27)(1/3) - 9*t*(27(1/2)*1075(1/2)/27 + 170/27)(2/3)/(9*(27(1/2)*1075(1/2)/27 + 170/27)(1/3)*(27(1/2)*1075(1/2)/27 +分享一個(gè)蘋果，各得一個(gè)蘋果，分享一種思想，各得兩種思想。分享是件快樂(lè)的事件，樂(lè)于分享的人，事業(yè)更容易成功。170/27)(2/3) + 162*C5*exp(5*t+12*t*(27(1/2)*1075(1/

33、2)/27+170/27)(1/3)-9*t*(27(1/2)*1075(1/2)/27+170/27)(2/3)/(9*(27(1/2)*1075(1/2)/27+170/27)(1/3)*(27(1/2)*1075(1/2)/27+170/27)(4/3)-285*C4*sin(5*3(1/2)*t+9*3(1/2)*t*(27(1/2)*1075(1/2)/27+170/27)(2/3)/(18*(27(1/2)*1075(1/2)/27+170/27)(1/3)*exp(24*t*(27(1/2)*1075(1/2)/27+170/27)(1/3)-5*t+9*t*(27(1/2)*1

34、075(1/2)/27+170/27)(2/3)/(18*(27(1/2)*1075(1/2)/27+170/27)(1/3)*(27(1/2)*1075(1/2)/27+170/27)(1/3)-756*C4*sin(5*3(1/2)*t+9*3(1/2)*t*(27(1/2)*1075(1/2)/27+170/27)(2/3)/(18*(27(1/2)*1075(1/2)/27+170/27)(1/3)*exp(24*t*(27(1/2)*1075(1/2)/27+170/27)(1/3)-5*t+9*t*(27(1/2)*1075(1/2)/27+170/27)(2/3)/(18*(27

35、(1/2)*1075(1/2)/27+170/27)(1/3)*(27(1/2)*1075(1/2)/27+170/27)(2/3)+81*C4*sin(5*3(1/2)*t+9*3(1/2)*t*(27(1/2)*1075(1/2)/27+170/27)(2/3)/(18*(27(1/2)*1075(1/2)/27+170/27)(1/3)*exp(24*t*(27(1/2)*1075(1/2)/27+170/27)(1/3)-5*t+9*t*(27(1/2)*1075(1/2)/27+170/27)(2/3)/(18*(27(1/2)*1075(1/2)/27+170/27)(1/3)*(

36、27(1/2)*1075(1/2)/27 + 170/27)(4/3) + 3255*3(1/2)*C4*cos(5*3(1/2)*t+9*3(1/2)*t*(27(1/2)*1075(1/2)/27+170/27)(2/3)/(18*(27(1/2)*1075(1/2)/27+170/27)(1/3)*exp(24*t*(27(1/2)*1075(1/2)/27+170/27)(1/3)-5*t+9*t*(27(1/2)*1075(1/2)/27 + 170/27)(2/3)/(18*(27(1/2)*1075(1/2)/27 + 170/27)(1/3) +3255*3(1/2)*C3*s

37、in(5*3(1/2)*t+9*3(1/2)*t*(27(1/2)*1075(1/2)/27+170/27)(2/3)/(18*(27(1/2)*1075(1/2)/27+170/27)(1/3)*exp(24*t*(27(1/2)*1075(1/2)/27+170/27)(1/3)-5*t+9*t*(27(1/2)*1075(1/2)/27 + 170/27)(2/3)/(18*(27(1/2)*1075(1/2)/27 + 170/27)(1/3) +38*27(1/2)*1075(1/2)*C5*exp(5*t+12*t*(27(1/2)*1075(1/2)/27+170/27)(1/3

38、)-9*t*(27(1/2)*1075(1/2)/27 +170/27)(2/3)/(9*(27(1/2)*1075(1/2)/27+170/27)(1/3)+285*C3*cos(5*3(1/2)*t+9*3(1/2)*t*(27(1/2)*1075(1/2)/27+170/27)(2/3)/(18*(27(1/2)*1075(1/2)/27+170/27)(1/3)*exp(24*t*(27(1/2)*1075(1/2)/27+170/27)(1/3)-5*t+9*t*(27(1/2)*1075(1/2)/27+170/27)(2/3)/(18*(27(1/2)*1075(1/2)/27+

39、170/27)(1/3)*(27(1/2)*1075(1/2)/27+170/27)(1/3)+756*C3*cos(5*3(1/2)*t+9*3(1/2)*t*(27(1/2)*1075(1/2)/27+170/27)(2/3)/(18*(27(1/2)*1075(1/2)/27+170/27)(1/3)*exp(24*t*(27(1/2)*1075(1/2)/27+170/27)(1/3)-5*t+9*t*(27(1/2)*1075(1/2)/27+170/27)(2/3)/(18*(27(1/2)*1075(1/2)/27+170/27)(1/3)*(27(1/2)*1075(1/2)/

40、27+170/27)(2/3)-81*C3*cos(5*3(1/2)*t+9*3(1/2)*t*(27(1/2)*1075(1/2)/27+170/27)(2/3)/(18*(27(1/2)*1075(1/2)/27+170/27)(1/3)*exp(24*t*(27(1/2)*1075(1/2)/27+170/27)(1/3)-5*t+9*t*(27(1/2)*1075(1/2)/27+170/27)(2/3)/(18*(27(1/2)*1075(1/2)/27+170/27)(1/3)*(27(1/2)*1075(1/2)/27+ 170/27)(4/3)+ 285*3(1/2)*C4*c

41、os(5*3(1/2)*t+9*3(1/2)*t*(27(1/2)*1075(1/2)/27+170/27)(2/3)/(18*(27(1/2)*1075(1/2)/27+170/27)(1/3)*exp(24*t*(27(1/2)*1075(1/2)/27+170/27)(1/3)-5*t+9*t*(27(1/2)*1075(1/2)/27+170/27)(2/3)/(18*(27(1/2)*1075(1/2)/27+170/27)(1/3)*(27(1/2)*1075(1/2)/27+ 170/27)(1/3)-81*3(1/2)*C4*cos(5*3(1/2)*t+9*3(1/2)*t*

42、(27(1/2)*1075(1/2)/27+170/27)(2/3)/(18*(27(1/2)*1075(1/2)/27+170/27)(1/3)*exp(24*t*(27(1/2)*1075(1/2)/27+170/27)(1/3)-5*t+9*t*(27(1/2)*1075(1/2)/27+170/27)(2/3)/(18*(27(1/2)*1075(1/2)/27+170/27)(1/3)*(27(1/2)*1075(1/2)/27+ 170/27)(4/3)+ 285*3(1/2)*C3*sin(5*3(1/2)*t+9*3(1/2)*t*(27(1/2)*1075(1/2)/27+1

43、70/27)(2/3)/(18*(27(1/2)*1075(1/2)/27+大型企業(yè)經(jīng)典管理資料模板，WORD 文檔，歡迎下載交流170/27)(1/3)*exp(24*t*(27(1/2)*1075(1/2)/27+170/27)(1/3)-5*t+9*t*(27(1/2)*1075(1/2)/27 + 170/27)(2/3)/(18*(27(1/2)*1075(1/2)/27 + 170/27)(1/3)*(27(1/2)*1075(1/2)/27 + 170/27)(1/3) - 81*3(1/2)*C3*sin(5*3(1/2)*t +9*3(1/2)*t*(27(1/2)*1075(1/2)/27+170/27)(2/3)/(18*(27(1/2)*1075(1/2)/27+170/27)(1/3)*exp(24*t*(27(1/2)*1075(1/2)/27+170/27)(1/3)-5*t+9*t*(27(1/2)*1075(1/2)/27+170/27)(2/3)/(18