Solution to Nonlinear Differential Equation
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christoph weihs
am 1 Jul. 2020
Kommentiert: Walter Roberson
am 2 Jul. 2020
I want to solve the Equation numerically
but I don't know how to write the code.
D is a square Matrix with constant values.
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Alan Stevens
am 2 Jul. 2020
Here is some example code using arbitrary data:
f0 = [0; 1; 2]; % initial conditions
tspan = [0 2]; % integration limits
[t, f] = ode45(@rates,tspan,f0); % ode solver
plot(t,f) % plot results
% function that calculates rates of change of f
function dfdt = rates(~,f)
D = [1 2 3; 0.4 0.2 -0.1; 1.6 1.7 -1.8];
dfdt = D*f;
end
Is this the sort of thing you are looking for (obviously you would need to enter your own data).
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