4th order non linear differential equation

can any body help me with the matlab code

of this 4th order non linear differential equation

[Star Strider]

This is similar to: fourth order differential equation

Why not just use the same approach?

[kingcruises]

I want to plot ode and not the sum of D ,D2f,D3f, D4f I want to plot the ode as one solution

Answer 1

[Star Strider]

‘I want to plot ode and not the sum of D ,D2f,D3f, D4f I want to plot the ode as one solution’

Then try this (using my previous Answer):

[X,Y] = ode45(odefcn, [0 1], [0 1 -8 6]);

figure
plot(X, Y(:,1))
grid

That will plot only ‘f’.