Higher terms in the Taylor series have been neglected. Let and , would be negative as the energy is maximum at that point, so p2 would be always positive.
(10.31)
The integral term can be calculated directly as it is definite integral and p2 is positive. Thus,
(10.32)
where is the value of integral term and . Substituting the value of w in equation
we get the approximate value of Ks as function of temperature.
and 
, 
would be negative as the energy is maximum at that point, so p2 would be always positive.
is the value of integral term and 
. Substituting the value of w in equation 
