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How to solve for dI/dz differential equation using runge kutta 4th order method?

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James Tursa
James Tursa on 18 Nov 2021
Edited: James Tursa on 18 Nov 2021
You have multiple independent variables listed, t and z. I think we need more information about what your overall problem is and what initial or boundary conditions you have.

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Answers (1)

Sudharsana Iyengar
Sudharsana Iyengar on 16 Nov 2021
use ode45
create a function of your diffrential equations and use ODE 45.
This is an example, do a similar for yours.
function dydt = odefcn(t,y,A,B)
dydt = zeros(2,1);
dydt(1) = y(2);
dydt(2) = (A/B)*t.*y(1);
end
Then call your function
A = 1;
B = 2;
tspan = [0 5];
y0 = [0 0.01];
[t,y] = ode45(@(t,y) odefcn(t,y,A,B), tspan, y0);
plotting result
plot(t,y(:,1),'-o',t,y(:,2),'-.')

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