hi all,
I have a problem using the MATLAB dde23 solver to evaluate the delayed HR model:
dx/dt = y(t) - a*x(t)^3 + b*x(t)^2 - z(t) + e (x(t-tau) - x(t))
dy/dt = c - d*x(t)^2 - y(t)
dz/dt = r [ s*(x(t) - xo) - z(t)]
how could I set the history values (-tau<t<0)?
it is...