Plotting solution of differntial system on one graph

Kamel — Sat, 19 Feb 2011 04:12:10 Z

restart: with(plots):sys := diff(x(t),t)=2*x(t)-x(t)*y(t),diff(y(t),t)=-y(t) + 0.4*x(t)*y(t):
> fcns := {x(t), y(t)}:
> p:= dsolve({sys,y(0)=1,x(0)=5},fcns,type=numeric,method=classical):
> odeplot(p, [[t,x(t)],[t,y(t)]],-4..4);

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Joe Riel — Mon, 21 Feb 2011 20:51:15 Z

In case it isn't clear, you can also plot expressions of the state-variables. That allows, say, plotting y vs x:

odeplot(p, [[x(t),y(t)]],-4..4);

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Plotting solution of differntial system on one graph

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