##
Region of Stability for the general problem

Let's consider the following example

dy/dt = 4*t*cos(y)

y(0) = 0

0 <= t <= 5

An analysis of this problem for Euler's Method (in class) suggests that the
time step should be less than 0.1. Let's look at a few timesteps:

h=0.01

h=0.1

h=0.3

The solution for h=0.01 and h=0.1 are very simlilar; for h=0.3, the solution
starts to oscillate, and blows up!