gusucode.com > 数学建模竞赛:露天矿的开采问题,运用lingo与matlab编程,内附代码 > 数学建模竞赛:露天矿的开采问题,运用lingo与matlab编程,内附代码/work4/rigid.m
function dy = rigid(t,y) dy = zeros(5,1); % a column vector %添加系数 dy(1) = y(1)+2*y(2)+y(4); dy(2) = y(1)-y(2)*y(3)+y(4)-y(2); dy(3) = y(1)*y(2)-y(3)+y(5)+y(3); dy(4) = y(4)+y(2)-y(4); dy(5) = y(5)-y(3)+y(5);