clear all Clcr=设定值;f=@(t,x)[-8/3*x(1)+x(2)*x(3);-10*x(2)+10*x(3);-x(1)*x(2)+r*x(2)-x(3)];t_final=100;x0=[0;0;1e-10][t,x]=ode45(f,[0,t_final],x0)figure(2)plot3(x(:,1),x(:,2),x(:,3));axis([10 42 -20 20 -20 20])
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/25 00:42:39
![clear all Clcr=设定值;f=@(t,x)[-8/3*x(1)+x(2)*x(3);-10*x(2)+10*x(3);-x(1)*x(2)+r*x(2)-x(3)];t_final=100;x0=[0;0;1e-10][t,x]=ode45(f,[0,t_final],x0)figure(2)plot3(x(:,1),x(:,2),x(:,3));axis([10 42 -20 20 -20 20])](/uploads/image/z/2615996-20-6.jpg?t=clear+all+Clcr%3D%E8%AE%BE%E5%AE%9A%E5%80%BC%EF%BC%9Bf%3D%40%28t%2Cx%29%5B-8%2F3%2Ax%281%29%2Bx%282%29%2Ax%283%29%3B-10%2Ax%282%29%2B10%2Ax%283%29%3B-x%281%29%2Ax%282%29%2Br%2Ax%282%29-x%283%29%5D%3Bt_final%3D100%3Bx0%3D%5B0%3B0%3B1e-10%5D%5Bt%2Cx%5D%3Dode45%28f%2C%5B0%2Ct_final%5D%2Cx0%29figure%282%29plot3%28x%28%3A%2C1%29%2Cx%28%3A%2C2%29%2Cx%28%3A%2C3%29%29%3Baxis%28%5B10+42+-20+20+-20+20%5D%29)
clear all Clcr=设定值;f=@(t,x)[-8/3*x(1)+x(2)*x(3);-10*x(2)+10*x(3);-x(1)*x(2)+r*x(2)-x(3)];t_final=100;x0=[0;0;1e-10][t,x]=ode45(f,[0,t_final],x0)figure(2)plot3(x(:,1),x(:,2),x(:,3));axis([10 42 -20 20 -20 20])
clear all
Clc
r=设定值;
f=@(t,x)[-8/3*x(1)+x(2)*x(3);-10*x(2)+10*x(3);-x(1)*x(2)+r*x(2)-x(3)];
t_final=100;
x0=[0;0;1e-10]
[t,x]=ode45(f,[0,t_final],x0)
figure(2)
plot3(x(:,1),x(:,2),x(:,3));
axis([10 42 -20 20 -20 20])
clear all Clcr=设定值;f=@(t,x)[-8/3*x(1)+x(2)*x(3);-10*x(2)+10*x(3);-x(1)*x(2)+r*x(2)-x(3)];t_final=100;x0=[0;0;1e-10][t,x]=ode45(f,[0,t_final],x0)figure(2)plot3(x(:,1),x(:,2),x(:,3));axis([10 42 -20 20 -20 20])
1.清除工作空间中的所有变量
2.清除指令窗中显示内容
3.设置参数r
4.f为函数句柄
5.设置终止时间为100
6.函数的初值
7.求微分方程组的数值解
8.图像2
9.画三维图
10.设置三个坐标轴的显示范围