Example 1. Consider
the D. E. over with and .
Is this a "linear differential equation" ? Why ?
Identify the functions p(t), q(t) and r(t).
Look at the given D.E. and see how it is related to the form given
in the theorem.
Our problem is seen to be
with and .
Enter the function p(t), q(t) and r(t) into Mathematica.
Notice that q(t) is negative over the interval. Don't worry, the solution can be computed with .
(c) John H. Mathews 2004