A new form of r/eq can be obtained if we use (29-32) within the procedure described at the beginning of the chapter: where the function aeq is given by: By taking into account (21) we see that aeq is always non-negative. Then, from (34) we obtain the upper bound of t]eq: It is a simple matter to verify that ^(©o/?) < ^(©o)- Consequently, by taking into account (27), (33) and (37) we can write:
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