題組內容
4. Consider the differen ential equation

Let Φ(t) be the periodic solution of (0.4).
(b) (10 points) Let X(t) be any other solution of (0.4). Show that
4. Consider the differen ential equation

Let Φ(t) be the periodic solution of (0.4).
(b) (10 points) Let X(t) be any other solution of (0.4). Show that