Input arguments error on line 2
1 view (last 30 days)
Show older comments
I am getting input arguments error on line 2 of the function
3 Comments
Ameer Hamza
on 21 Oct 2020
Why are you calling ode45 inside the ODEfun and using ODEfun as a function handle. This will not work and cause infinite recursion.
Accepted Answer
Stephan
on 21 Oct 2020
Edited: Stephan
on 21 Oct 2020
Divide your code into a function for your ode and the part for solving and plottting the results:
y0 = 0; % --> change to 1 for example to get a "non boring" solution
Wspan = [0 100];
[z, fb] = ode45(@ODEfun, Wspan, y0);
plot(z, fb(:,1));
function dYfuncvecdW = ODEfun(~, Yfuncvec)
X = Yfuncvec(1);
k = 6;
Cao = 0.2;
yao = 1/3;
Fao = 2;
% Pao = 10; --> Value is not used
epsilon = yao*(1-2-1);
ThetaB = 2;
% alpha = 0.02; --> Value is not used
Ca = Cao*(1-X)/(1+(epsilon*X));
Cb = Cao*(ThetaB-(2*X))/(1+(epsilon*X));
ra = -k*Ca*Cb^2;
dXdW = -(ra/Fao);
dYfuncvecdW = dXdW;
end
0 Comments
More Answers (1)
Ameer Hamza
on 21 Oct 2020
How are you running this function? You need to pass input aguments to get an output
out = ODEfun(0, 1)
0 Comments
See Also
Categories
Find more on Ordinary Differential Equations in Help Center and File Exchange
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!