Warning while solving 2 Simultaneous ODE's using dsolve

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Thinesh Kumar T M
Thinesh Kumar T M le 24 Sep 2021

Réponses (1)

Shravan Kumar Vankaramoni
Hi,
Yes, you will get that warning if you try to pass equations and conditions directly to "dsolve". You need to use "diff" function to define a differential. You can do something as following for "d2y/dt2" with the initial conditions y(0)=b and y′(0)=1
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)
Similar to the condition, equation can also be a vector. Hope this helps
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