ODELS10
From Exampleproblems
The motion of a simple pendulum with a linear damping is governed by the equation 
. where 
.
In the 
phase plane for which 
and 
, find all the critical points, classify them, and sketch the orbits near each critical point. Sketch the phase plane.
Notice: I missed a negative sign in the scanned homework: 
Main Page : Ordinary Differential Equations : Linear Systems
