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How to solve the following system of ODE's?

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Omkar Kaskar
Omkar Kaskar on 19 Jul 2018
Answered: Aquatris on 19 Jul 2018
I'm not sure where to start even. I thought this could be done using ode15 or ode23 to solve a system of differential algebraic equations, but I'm stuck at the part where I need to define the function describing the equations. How do I account for the derivative of the other variable in one equation?

Answers (1)

Aquatris
Aquatris on 19 Jul 2018
Here is a code;
syms Po(t) Pi(t)
co = 5;
cl = 2;
pes = 2;
pon = 10;
peu = 7;
R = 34;
cs = 23;
cb = 10;
Qa = 2;
ct = 12;
Qu = 15;
ode1 = (co+cl)*diff(Po) - cl*diff(Pi) == (pes-pon)/R;
ode2 = (co+cs+cb)*diff(Pi) - cl*diff(Po) == Qa + ct*(Pi-peu)-Qu;
odes = [ode1; ode2];
S = dsolve(odes)

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