Solve the ODE using ODE45 and plot the response for the initial conditions
1 vue (au cours des 30 derniers jours)
Afficher commentaires plus anciens
funtion xdot = ode45(x, t);
xdot = x^4 - 7*x^2 + 6*x;
%Plotting Data
%x(0) = -3.5
subplot(311)
t = (0: 0.01 : 0.5);
x = ('ode45'; -3.5; t);
plot (t,x)
%x(0) = -0.2
subplot(312)
t = (0: 0.01 : 0.5);
x = ('ode45'; -0.2; t);
plot (t,x)
%x(0) = 1.1
subplot(313)
t = (0: 0.01 : 0.5);
x = ('ode45'; 1.1; t);
plot (t,x)
%x(0) = 2.5
subplot(314)
t = (0: 0.01 : 0.5);
x = ('ode45'; 2.5; t);
plot (t,x)
endfunction
1 commentaire
Star Strider
le 22 Oct 2022
Your ‘ode45’ function is going to overshadow the ode45 function you are going to need to solve whatever it is you want to do.
Réponses (1)
Jan
le 23 Oct 2022
If you call a function "ode45", it depends on where its folder is located in Matlab's path, if it is used or the original ODE45 function of Matlab. This is called "shadowing". Avoid to use names of built-in Matlab functions for your own variables and functions, because this causes many troubles.
subplot(311)
This notation is deprecated since Matlab 5.0 (1996). Use subplot(3,1,1) or the modern tiledlayout (since R2021a).
This line is not meaningful:
x = ('ode45'; -3.5; t);
Remember, that this is a Matlab forum. "endfunction" is not Matlab, but might be Octave.
Please take the time to ask a specific question.
0 commentaires
Voir également
Catégories
En savoir plus sur Ordinary Differential Equations dans Help Center et File Exchange
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!