xichyu |
2015-02-06 16:42 |
MATLAB,为什么能出现下面情况?应该怎么修改呢?
在Matlab下输入:edit,然后将下面两行百分号之间的内容,复制进去,保存 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% function dx=myfun(t,x) dx(1)=-6*x(2)*x(2)-9; dx(2)=-3*x(1)*x(2)-2*x(3); dx(3)=x(1)*x(2)+x(3)+8; dx=dx(:); %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
然后,在Matlab下面输入: x0=[3,-4,2]; t0=0:0.1:2; [t,x]=ode45('myfun',[0,2],x0); %ode45会自动调整步长 plot(t,x) legend('u','v','Y')
运行结果出现Warning: Failure at t=1.280767e-001. Unable to meet integration tolerances without reducing the step size below the smallest value allowed (4.440892e-016) at time t
显然不是需要的结果!!! |
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