Consider the system

˙ x = −y − 0.1x



x2 + y2, ˙ y = x − 0.1y



x2 + y2.

By considering the line segment  = {(x, y) ∈ ℜ2 : 0 ≤ x ≤ 4, y = 0}, list the first 10 returns on  given that a trajectory starts at the point (4, 0).