Integrates a
higher order ODE via RK4, in order to show the detail of the method,
i.e., its 4 (vector) slopes.
The problem is based on a particular embedded
higher (2.nd) order ODE [Mørken]:
see ODE "Example 39" .
A Mathematica.nb solving the problem is also given.
#Plots the numerical (x) and
analytical (xa) curves. |