 .  With the 
values of a, b, c and d from equation (11) inserted into equation
(7),
.  With the 
values of a, b, c and d from equation (11) inserted into equation
(7),
 
  Since
Since  lies between
 lies between  and
and
 , it follows that
, it follows that
  
  Integrating this inequality shows  that
 
Integrating this inequality shows  that  behaves like
 behaves like  for some constant K; that is, the amplitude of
 for some constant K; that is, the amplitude of  decreases to 0 slowly, like
decreases to 0 slowly, like  , as
, as  .
.
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