How to set several initial conditions when solving an ODE?
17 Ansichten (letzte 30 Tage)
Ältere Kommentare anzeigen
Sergio Manzetti
am 29 Dez. 2017
Kommentiert: Sergio Manzetti
am 29 Dez. 2017
Hi, I have the following ODE:
if true
% code
end
syms a h Y(x) g x B E
eqn = (h)*diff(Y,x, 2) + (g)*diff(Y,x) + (g^2 - E)*Y == 0;
cond = Y(0) == 1;
cond = (diff(Y)(0) == 0;
Y(x) = dsolve(eqn, cond)
and would like to add Y'(0)= 0 as initial condition, however cond = (diff(Y)(0) == 0; does not work. How can I combine two conditions here?
Thanks!
0 Kommentare
Akzeptierte Antwort
KSSV
am 29 Dez. 2017
Check this demo from the documentation:
syms y(t) a b
eqn = diff(y,t,2) == a^2*y;
Dy = diff(y,t);
cond = [y(0)==b, Dy(0)==1];
ySol(t) = dsolve(eqn,cond)
Weitere Antworten (0)
Siehe auch
Kategorien
Mehr zu Number Theory finden Sie in Help Center und File Exchange
Produkte
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!