Equations:
df/dt= 4f(t) – 3f(t)p(t)
dp/dt= -2p(t) + f(t)p(t)
Question: Useode45to plot some representative examples of solution trajectories on the time scale[0;5], starting at the following points: (0.5,1), (1.0,5), (1,1), and (1.5,1.5).[Hint.When you define your differential equation,f is y(1)and p is y(2). This will stretch the axes of your graph; that's okay.]
Code:
syms f(t) p(t);figure; hold onfor c = 0:0.1:5 g = @(f, p) 4*f - 3*f*p; h = @(f,p) -2*p + f*p; [f,p] = ode45(g,h, [0,5], c); endplot(f, p)axis tight;
Error: Error using odearguments (line 21) When the first argument to ode45 is a function handle, the tspan argument must have at least two elements.
Error in ode45 (line 115) odearguments(FcnHandlesUsed, solver_name, ode, tspan, y0, options, varargin);
Error in Project_5_2 (line 23) [f,p] = ode45(g,h, [0,5], c);
Best Answer