matlab上機作業(yè)第三章

1、上機實驗報告班級:機械工程及自動化02姓名:鄢文光學(xué)號:40902010221日期:2012年11月13日題目1-1:>> syms x;limit(cos(sqrt(x(pi/x,x,0,'right'ans =exp(-1/2*pi題目1-2:>> syms x;limit(3*sin(x+(x2*cos(1/x/(1+cos(x*log(1+x,x,0ans =3/2題目1-3:>> syms x;limit(sqrt(4*x2+x-1+x+1/sqrt(x2+sin(x,x,inf,'left'ans =3題目2-1:

2、>> syms x;f=(tan(sqrt(x+sqrt(x+sqrt(2*x2;diff(fans =tan(x+(x+2(1/2*x(1/2(1/2(1/2*(1+tan(x+(x+2(1/2*x(1/2(1/2(1/22/( x+(x+2(1/2*x(1/2(1/2(1/2*(1+1/2/(x+2(1/2*x(1/2(1/2*(1+1/2*2(1/2/x(1/ 2題目2-2:>> syms x;f=(cos(x2*(sin(1/x3;diff(fans =-2*sin(x2*x*sin(1/x3-3*cos(x2*sin(1/x2*cos(1/x/x2題目3-1:

3、>> syms x;f=sqrt(sin(x-(sin(x3;int(f,0,pians =4/3題目3-2:>> syms x;f=(1/x*sqrt(x+1/(x-1,int(ff =1/x*(1+x/(x-1(1/2ans =(1+x/(x-1(1/2*(x-1/(1+x*(x-1(1/2*(-atan(1/(x2-1(1/2+log(x+(x2-1(1/2 題目4:>> dsolve('(x2*Dy+x*y=y2','y(1=1','x'ans =2*x/(1+x2題目5:function ydot=f

4、un1(t,yydot=y(2;y(3;-4*y(1-3*y(2-11*y(3+3;%建立函數(shù)fun1.m>> y0=1,1,1;t,y=ode45('fun1',0:5:100,y0t =5101520253035404550556065707580859095100y =1.0000 1.0000 1.00000.8188 -1.4284 -1.4453-0.6050 -0.0925 2.45170.5827 1.1672 -0.92680.6862 -0.8958 -1.1044-0.3063 -0.1492 1.62210.4365 0.8076 -0.50

5、010.5792 -0.5548 -0.8243-0.1061 -0.1571 1.06440.3525 0.5537 -0.25220.4959 -0.3386 -0.60390.0270 -0.1424 0.69250.3058 0.3764 -0.11230.4330 -0.2030 -0.43570.1148 -0.1193 0.44660.2812 0.2538 -0.03720.3863 -0.1191 -0.31020.1723 -0.0951 0.28520.2692 0.1697 0.00060.3523 -0.0679 -0.21830.2095 -0.0734 0.180

6、3 題目6:function xdot=fun2(t,xxdot=x(2;x(3;-3*x(1-2*x(2-10*x(3+4;%建立函數(shù)fun2.m>> x0=1,1,1;t,x=ode45('fun2',0:5:100,x0 t =5101520253035404550556065707580859095100x =1.0000 1.0000 1.00002.0548 -0.6565 -0.10700.6200 0.3125 0.16391.8778 -0.0948 -0.14980.9864 -0.0190 0.10911.5164 0.0627 -0.0667

7、1.2619 -0.0666 0.03331.3411 0.0528 -0.01151.3543 -0.0347 -0.00041.3051 0.0191 0.00531.3581 -0.0080 -0.0062882.波旁王朝是哪個國家的法國883.太平天國由盛轉(zhuǎn)衰的事件是領(lǐng)導(dǎo)集團的內(nèi)部斗爭884.撒尿小孩銅像坐落于布魯塞爾885.中國第一個開發(fā)的海底油田位置在渤海886.“究天人之際,通古今之變,成一家之言”是誰的名言司馬遷887.下列國家中森林覆蓋率沒有超過60%的是中國1.3324 0.0011 0.00011.3344 -0.0005 -0.00021.3325 0.0002 0.0

8、0021.3339 0.0000 -0.00021.3330 -0.0001 0.0001題目7:>>(解析解 x,y=dsolve('Dx=y','Dy=-4x-3y+2','x(0=1','y(0=0' x =1-5/2*t2y =-5*t(數(shù)值解>> x0=1,0;t,x=ode45('fun3',0:5:100,x0t =510152025303540455055606570758085911.“布拉格之春”事件發(fā)生在捷克斯洛伐克100913.印度最大的城市孟買人口超過 600萬91

9、4.孫武字什么子卿915.吳三桂在清朝初期在哪里宣布獨立云南916.直升機停在半空中時,它的旋翼是仍在轉(zhuǎn)動917.土耳其人最早制造硬幣的材料是用金銀合金918.世界水城威尼斯有多少個島嶼一百多個919.惟知躍進是誰的口號李大釗920.世界上第一顆人造衛(wèi)星是哪個國家發(fā)射的蘇聯(lián)0.5000 -0.00000.5000 0.00000.5000 0.00000.5000 -0.00000.5000 -0.00000.5000 -0.00000.5000 0.00000.5000 0.00000.5000 -0.00000.5000 -0.00000.5000 0.00000.5000 0.00000

10、.5000 0.00000.5000 0.0000題目8-1:>> syms t w;f1=sym('t*exp(-t2'f1 =t*exp(-t2>> F11=fourier(f1,wF11=-1/2*i*pi(1/2*w*exp(-1/4*w2>> F12=ifourier(f1F12 =1/4*i/pi(1/2*x*exp(-1/4*x2題目8-2:>> syms t w;f2=sym('(t2*exp(-t2'f2 =(t2*exp(-t2944.把地圖著色,使得相鄰的國家有不同的顏色,至少需要幾種顏色4種

11、顏色F21 =1/2*pi(1/2*exp(-1/4*w2-1/4*pi(1/2*w2*exp(-1/4*w2 >> F22=ifourier(f2F22 =-1/8/pi(1/2*exp(-1/4*x2*(-2+x2題目9-1:>> syms t s;f1=sym('(sin(t*cos(3*t'f1 =(sin(t*cos(3*t>> F11=laplace(f1,sF11 =(s2-8/(s2+16/(s2+4>> F12=ilaplace(f1F12 =4*ilaplace(sin(t*cos(t3,t,x-3*ilaplace(sin(t*cos(t,t,x 題目