In this article, we study model-theoretic properties of algebraic
differential equations of order 2, defined over constant differential fields.
In particular, we show that the set of solutions of a general differential
equation of order 2 and of degree d≥3 in a differentially closed field
is strongly minimal and disintegrated.
We also give two other formulations of this result in terms of algebraic
(non)-integrability and algebraic independence of the analytic solutions of a
general planar algebraic vector field.Comment: 27 page