Differential equations using ODE45

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Star1202
Star1202 2020-10-15
评论： Md Muzakkir Quamar 2020-10-15
please help me in solving this question..
Q. solve:
dy1/dt = y2
dy2/dt = 1000*y2*(1-y1^2)-y1
given initial conditions : y1(0) = 0 and y2(0) = 1.

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采纳的回答

madhan ravi
madhan ravi 2020-10-15
doc ode45 % have a read at the document

更多回答（1 个）

Md Muzakkir Quamar
Md Muzakkir Quamar 2020-10-15
tspan = [0 20];
Y_int=[0 1];
[t,x] = ode45(@odefcn,tspan,Y_int,[],a, b, c, u);
figure(1)
plot(t,y(:,1),'r',t,y(:,2),'b')
function dydt = odefcn(t,y)
dydt = zeros(2,1);
dydt(1) = y(2);
dydt(2) = 1000*y(2)*(1-y(1)^2)-y(1);
end
  2 个评论
Steven Lord
Steven Lord 2020-10-15
Please don't post the full answers to questions that sound like homework assignments, particularly if the poster has not shown what they've tried first.

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