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Topic: Logistic equation with delay
Replies: 8   Last Post: Mar 24, 2014 3:42 AM

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Posts: 1,717
Registered: 11/8/10
Re: Logistic equation with delay
Posted: Mar 24, 2014 3:42 AM
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"Adin" wrote in message <lgi88s$etr$>...
> This is what I have so far:
> N1=zeros(201,1);
> t=zeros(201,1);
> t(1)=0;
> N1(1)=10;
> N1(2)=20;
> delta = 1;
> h=1;
> for i=2:200
> t(i)=i-1;
> d=(delta * t(i-1));
> N1(i+1) = N1(i) + h*N1(i)*(a-b*N1(i-d));
> end
> plot(t,N1(:,1)), grid on;
> But I'm getting weird plots like this:
> Any ideas what I'm doing wrong?

delta = 1;
for i=2:200

But - as I told you - this is the discrete form of the delayed logistic equation, not the continuous form.

Best wishes

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