Can you help me with ode45?

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Michela Longhi
Michela Longhi 2019-5-19
评论： Michela Longhi 2019-5-20
Hello, I have some problem with my matlab code. I would like to use ode45, but the program gives me the error:
"Not enough input arguments.
Error in file>odefun (line 24)
dydt=5*y
Error in file (line 20)
[t,y] = ode45(odefun,tspan,y0)"
can you help me?
Thanksssss!!!
Ts = 1;
tspan=[0:Ts:10]; % time scale
y0=1; %initial condition
[t,y] = ode45(odefun,tspan,y0)
function dydt = odefun(t,y)
dydt = zeros (2,1)
dydt(1) = y(2);
dxdt(2) = -3*y(1);
end

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采纳的回答

Walter Roberson
Walter Roberson 2019-5-19
[t,y] = ode45(@odefun,tspan,y0)
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madhan ravi
madhan ravi 2019-5-20
It means that you have custom file named ode45.m which thwarts the inbuilt function of MATLAB‘s ode45(). So move your file from MATLAB‘s path or rename it.
Michela Longhi
Michela Longhi 2019-5-20
Thank you!!!! It's working now, my file was called file.m but in the same folder there was a file namer ode45.m that disturbed my script.

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