Getting error in ode 45

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BINAY NAYAK
BINAY NAYAK 2022-2-28
回答： Abolfazl Chaman Motlagh 2022-2-28
function dcdt = odefun1(t,c)
dcdt = zeros(3,1);
dcdt(1) = -c(1)+20*c(2);
dcdt(2) = c(1)-40*c(2)+c(3);
dcdt(3) = 20*c(2)-c(3);
[t,c] = ode45(@odefun1,[0 10],[1;0;0]);
plot(t,c(:,1),t,c(:,2),t,c(:,3))
end

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回答（1 个）

Abolfazl Chaman Motlagh
Ran in:
you put ode45 and plot in your ode function. try this : (all in one script)
[t,c] = ode45(@odefun1,[0 10],[1;0;0]);
plot(t,c(:,1),t,c(:,2),t,c(:,3))
function dcdt = odefun1(t,c)
dcdt = zeros(3,1);
dcdt(1) = -c(1)+20*c(2);
dcdt(2) = c(1)-40*c(2)+c(3);
dcdt(3) = 20*c(2)-c(3);
end

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