Symbolic Vector ODE numerical solution
1 vue (au cours des 30 derniers jours)
Afficher commentaires plus anciens
I'm trying to solve an ODE using vectorized symbolic calculus.
N = 4;
syms theta(t) [1 N]
Q = tril(ones(N));
theta = theta*Q';
eq = diff(theta, t, t) - cos(theta);
Dt = diff(theta, t);
How can I use this with ode45 or other solvers?
1 commentaire
Walter Roberson
le 15 Juin 2020
To use that with ode45 or similar, I recommend reading the first example for odeFunction() as it shows the steps to use to prepare symbolic differential equations for use with ode45 or similar.
Réponses (1)
Paresh yeole
le 14 Juin 2020
in your equation for 'eq', if you are looking for double differentiation then it should be
eq = diff(theta, t, 2) - cos(theta);
1 commentaire
Walter Roberson
le 14 Juin 2020
diff(theta, t, 2) and diff(theta, t, t) are treated the same, both become diff(theta, t, t) on output.
Voir également
Catégories
En savoir plus sur General Physics 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!