Solve the system the differential equation with time-delays

I want to solve a system with is vector at point t, is vector at point , A is a matrix.

I used to solve system without time-delay τ with ode45 and define

function dpdt = control_law(t,p)

dpdt = A*p;

end

However, I don't know how to define function with time-delay. Please give a hint, thanks.

[Torsten]

help dde23

Answer 1

[Jason Nicholson]

Check out dde23. You need to write ddefun(t, y, Z).

[Hoang Vu Huy]

Thank you. I done.