can anyone help me to get rid of the error not enough input arguments in line 7?

m = 2;
c = 0.4;
k = 4;
x0 = [10; 0];
Time_Span = [0, 40.0]; 
xdot = zeros(2,1); 
xdot(1) = x(2); 
xdot(2) = -(1/m)*(c*x(2) + k*x(1));
[t_ex2, x_ex2] = ode45(@ODE_Damped_Spring, Time_Span, x0);
figure;
plot(t_ex2, x_ex2(:,1), 'o-')
title('ode45 Position for Damped Spring')
grid on;

Answer 1

[Torsten]

x0 = [10; 0];
Time_Span = [0, 40.0]; 
[t_ex2, x_ex2] = ode45(@ODE_Damped_Spring, Time_Span, x0);
figure;
plot(t_ex2, x_ex2(:,1), 'o-')
title('ode45 Position for Damped Spring')
grid on

function xdot = ODE_Damped_Spring(t,x)
  m = 2;
  c = 0.4;
  k = 4;
  xdot = zeros(2,1); 
  xdot(1) = x(2); 
  xdot(2) = -(1/m)*(c*x(2) + k*x(1));
end

[Puja]

thank you so much.