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wanglaiwang

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function test9
global v
global r
    [v,r]=meshgrid(1:1:20);
    sol=dde23(@ddex1de,[v,r],[1,1,1],[100,1000]);
    mesh(v,r,sol.y(1));
function dydt = ddex1de(t,y,Z)
% Differential equations function for DDEX1.
ylag1 = Z(:,1);
ylag2 = Z(:,2);
s=160;d=0.01;k=0.001;d2=0.03;gama=0.02;v=0.03;
d3=0.1;
dydt =[s-d*y(1)-k*y(1).*y(2);
    k*0.02*ylag1(1).*ylag1(2)-d2*y(2)-gama*y(2).*y(3);
    v*ylag2(2).*ylag2(3)./(ylag2(3)+1)-d3*y(3)];
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meatball1982

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2Â¥2013-11-11 12:36:33
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wanglaiwang

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2Â¥: Originally posted by meatball1982 at 2013-11-11 12:36:33
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