matlab上机作业第三章

1、上机实验报告班级:机械工程及自动化02姓名:鄢文光学号:40902010221日期:2012年11月13日题目1-1:>> syms x;limit(cos(sqrt(x(pi/x,x,0,'right'ans =exp(-1/2*pi题目1-2:>> syms x;limit(3*sin(x+(x2*cos(1/x/(1+cos(x*log(1+x,x,0ans =3/2题目1-3:>> syms x;limit(sqrt(4*x2+x-1+x+1/sqrt(x2+sin(x,x,inf,'left'ans =3题目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题目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题目3-1:

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

4、un1(t,yydot=y(2;y(3;-4*y(1-3*y(2-11*y(3+3;>> y0=1,1,1;t,y=ode45('fun1',0:5:100,y0t =5101520253035404550556065707580859095100y =0.2095 -0.0734 0.1803 题目6:function xdot=fun2(t,xxdot=x(2;x(3;-3*x(1-2*x(2-10*x(3+4;>> x0=1,1,1;t,x=ode45('fun2',0:5:100,x0 t =5101520253035404550

5、556065707580859095100x =882.波旁王朝是哪个国家的法国883.太平天国由盛转衰的事件是领导集团的内部斗争884.撒尿小孩铜像坐落于布鲁塞尔885.中国第一个开发的海底油田位置在渤海886.“究天人之际,通古今之变,成一家之言”是谁的名言司马迁887.下列国家中森林覆盖率没有超过60%的是中国题目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(数值解>> x0=1,0;t,x=od

6、e45('fun3',0:5:100,x0t =510152025303540455055606570758085911.“布拉格之春”事件发生在捷克斯洛伐克100913.印度最大的城市孟买人口超过 600万914.孙武字什么子卿915.吴三桂在清朝初期在哪里宣布独立云南916.直升机停在半空中时,它的旋翼是仍在转动917.土耳其人最早制造硬币的材料是用金银合金918.世界水城威尼斯有多少个岛屿一百多个919.惟知跃进是谁的口号李大钊920.世界上第一颗人造卫星是哪个国家发射的苏联题目8-1:>> syms t w;f1=sym('t*exp(-t2'

7、;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题目8-2:>> syms t w;f2=sym('(t2*exp(-t2'f2 =(t2*exp(-t2944.把地图着色,使得相邻的国家有不同的颜色,至少需要几种颜色4种颜色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题目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 题目9-2:>> syms t s;f2=sym('exp(-t2'f2