1. The problem statement, all variables and given/known data Get the actual solution for the differential equation in matrix form? It is uploaded 2. Relevant equations 3. The attempt at a solution My question is why is it drawn in the upload as the top picture on the upload shows, why not as the second picture shows how did they figure out which way the curvature goes? I realize the positive eigenvalues indicate that the two eigenvectors marked in dark black will go away from the origin and thus so will the curveing line. I can also see that (ada1) vector is bigger and so as T values are positive and large it will dominate and go parallel to (ada2) and when negative and large T are input it will go parallel to (ada1).