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[½»Á÷] MATLAB³ö´íÁË

ÔÚMatlabÏÂÊäÈ룺edit£¬È»ºó½«ÏÂÃæÁ½ÐаٷֺÅÖ®¼äµÄÄÚÈÝ£¬¸´ÖƽøÈ¥£¬±£´æ
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
function dx=myfun(t,x)
dx(1)=-6*x(2)*x(2)-9;
dx(2)=-3*x(1)*x(2)-2*x(3)-Yvv-Yuu;
dx(3)=x(1)*x(2)+x(3)+8;
Yvv=0.5*p*L*T*(0.048265-6.293*(1-c)*T/B);
Yuu=0.5*p*L*L*L*T*(0.0045-0.445*(1-c)*T/B);
dx=dx(;
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

È»ºó£¬ÔÚMatlabÏÂÃæÊäÈ룺
clear all
clc
syms Yvv Yuu p L T c T B
x0=[1,1,1];
t0=0:0.1:2;
[t,x]=ode45('myfun',[0,10],x0);  %ode45»á×Ô¶¯µ÷Õû²½³¤
plot(t,x)
legend('u','v','Y')

MATLAB³ö´íÁË
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