Proceedings of the Edinburgh Mathematical Society (Series 2)

Table of Contents - February 1933 - Volume 3, Issue 03  

Research Article

An Approximation connected with e-x

E. T. Copsona1

a1 St Andrews University.

One of the many interesting problems discussed by Ramanujan is concerned with the effect of truncating at its maximum term nn/n! the exponential series for en, where n is a positive integer. When n is large, the sum of the first n terms is, roughly speaking, half the sum of the whole series.

(Received September 20 1932)

(Revised November 04 1932)