"Inputs must be floats, namely single or double"
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system of equations is:
F = @(t, r, y) [y(1), y(2), y(3), f_integral]
And then calling the ode solver:
[t, y] = ode45(F, [0 5], [1 1 1]).
1 comentario
Torsten
el 13 de Jun. de 2017
Please show the differential equation you are trying to solve in a mathematical notation.
From the question you deleted meanwhile, it was not clear what you were trying to solve (at least for me).
Best wishes
Torsten.
Respuesta aceptada
Torsten
el 13 de Jun. de 2017
function main
tspan=[0 5];
y0=[1; 1; 1; 0];
[t,y]=ode45(@fun,tspan,y0)
function dy=fun(t,y)
dy=zeros(4,1);
dy(1)=y(1);
dy(2)=y(2);
dy(3)=y(3);
funint=@(r)(y(3)^2+y(4)^2)*r;
dy(4)=integral(funint,-1,1);
Best wishes
Torsten.
1 comentario
Torsten
el 13 de Jun. de 2017
r is just a formal integration variable - it's not needed in the parameter list for "fun".
Best wishes
Torsten.
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