MATLAB ODE45() SOLVER

(Do not answer if after 09.17.18 05:00 pm)

Use the ode45() function to plot the solution for: x'''+4x''+6x'+8x=f(x) where f(t)=u(t) (a unit step) over the range 0 to 10 seconds. All initial conditions are zero.

Plot the position and velocity on separate graphs.

Please, modify the code included below for the ode45(). The code for the function is not shown, so you have to include it as well.