1) Recreate the trajectory obtained in example2dot3main.m using the true anomaly parameterization (what I showed in class at the end of lecture 7).
2) Verify that the ode45 and the parametric trajectories coincide (plot both in 3D).
3) compute the true anomalies corresponding at each time step created by the ode45.
4) At those theta values above, compute the velocity vector using the true anomaly parameterization .
5) Verify that the velocity vectors obtained with ode45 and the parametric method coincide.