I have this script to plot the solution to damped oscillator but when i run it it says undefined function or variable. What am I missing?

function yp=forced(t,y)
yp=[y(2);((0.56*sin(3.7*t))-(0.78*y(2))-(14*y(1)))];
tspan=[0 5];
y0=[0,0];
[t,y]=ode45(@(t,y) forced(t,y), tspan,y0);
plot(t,y(:,1));
grid on
xlabel('time')
ylabel('displacement')
title('displacement vs time')
end

Answer 1

[madhan ravi]

%SCRIPT FILE

tspan=[0 5]; 
y0=[0,0]; 
[t,y]=ode45(@forced, tspan,y0); 
plot(t,y(:,1));
grid on 
xlabel('time') 
ylabel('displacement') 
title('displacement vs time')

%FUNCTION FILE:

function yp=forced(t,y) 
yp=[y(2);((0.56*sin(3.7*t))-(0.78*y(2))-(14*y(1)))]; 
end

[madhan ravi]

See attached screenshot containing the graph you need , make sure to accept the answer if it's what you were looking for else let know

[Zivile Dailidonyte]

That is exactly what I need but still when I run it it says undefined function or variable. Even though I created separate function file and the script with all the inputs.

[madhan ravi]

just copy my answer(full) and paste it in the command window