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Published online by Cambridge University Press: 11 August 2014
The problem considered by Mr E. M. Thomas on pp. 253-4 of J.S.S. Vol. VII can be approached analytically as follows:
Consider the ratio where and
. This is a function of h and may be expanded in a Taylor series
The first term on the right-hand side is unity and it is easy to show that the second term is
where v = (I + i)−1.