Please I need help. How can I plot the Scale-free networks with prey-predator system

How can I plot the Scale-free networks with prey-predator system

I have the system of ODEs

y1' = (2-.5*y2)*y1 +

y2' = (-1+.5*y1)*y2 +

f = @(t,y) [(2-.5*y(2))*y(1); (-1+.5*y(1))*y(2)];

y = [6;2]; t = 0; % given initial value

h = .1; % step size

for i=1:100

plot(t,y(1),'b.',t,y(2),'r.'); hold on % plot rabbits in blue, foxes in red

s = f(t,y); % find slope vector

y = y + h*s; % find new y-vector by using s

t = t + h;

end

hold off

legend('rabbits','foxes')

Answer 1

[Manas Meena]

This example shows how to solve and plot a differential equation representing a predator/prey model

https://www.mathworks.com/help/matlab/math/numerical-integration-of-differential-equations.html#:~:text=Consider%20the%20pair%20of%20first,prey%20and%20predator%20populations%2C%20respectively.

You can also refer to the following file exchange link that plots a phase portrait of the Lotka-Volterra Predator Prey model

https://www.mathworks.com/matlabcentral/fileexchange/46128-lotka-volterra-predator-prey-model

[AMA]

Thank you so Much