In ode45 is the initial state y0 column vector only?

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Qiaoli Ji
Qiaoli Ji 2017-11-22
评论： Qiaoli Ji 2017-11-22
function dy = rigid(t,y)
dy = zeros(3,1); % a column vector
dy(1) = y(2) * y(3);
dy(2) = -y(1) * y(3);
dy(3) = -0.51 * y(1) * y(2);
options = odeset('RelTol',1e-4,'AbsTol',[1e-4 1e-4 1e-5]);
[T,Y] = ode45(@rigid,[0 12],[0 1 1],options);

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Walter Roberson
Walter Roberson 2017-11-22
No, you can use row vector initial state. The output of the ode function must be a column vector though.

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