Matlab Ordinary Differential Equation solver?

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So far, I tried this. I converted to first order ODE

Q''(t) = 10cos(wt)-5Q(t)-4Q'(t)
x1=Q(t)
x2=Q'(t)

x1'=Q'(t)=x2
&, x2'=Q"(t)=10cos(wt)-5Q(t)-4Q'(t)

or, simply

x1' = x2
x2'=10cos(wt)-5Q(t)-4Q'(t)


then the matlab code...
function project2
[t,x] = ode45(@dfile,[0,80],[0;0]);
plot(t,x(:,0))
title("LQ''(t)+RQ'(t)+(1/C)Q(t)=E(t), Q(0)=0, Q'(0)=0")
xlabel('t', ylabel('y'), grid

function xprime = dfile(t,x)
xprime = zeros (2,1);
xprime(1)=x(2);
xprime(2)= 10cos(omega*t)-5x(1)-4x(2);

Now, I have never done matlab in life and apparently we have this project I need to finish, can anybody help me please?

asked 39 secs ago

Mokammel Hossain Sanju

42

Matlab Ordinary Differential Equation solver?