MATLAB: I want to plot x and y for ODE45 function

Question

i have this function

function dy = Funcion(x,y)

m=0.1; M=10;c=0.1; k=0.4; F=5*x;

dy = zeros(2,1);

dy(1) = x(2);

dy(2) = -(c*y(1) – F + k*y(2))/(M + m);

and i want to plot x and y i write

[x,y] = ode45(@Funcion,[0 10],[0.1 -1]);

plot(x,y)

this error is appear why

Error in ode45 (line 113)

[neq, tspan, ntspan, next, t0, tfinal, tdir, y0, f0, odeArgs, odeFcn, …

Answer 1

This line doesn't look correct:

dy(1) = x(2);

The first agument x in the derivative function is the independent variable and a scalar, so there is no x(2) value. Maybe you meant this:

dy(1) = y(2);