On the Determination of the Rate of Interest of an Annuity

This subject, as it left the hands of Simpson, Halley, Dodson, c and I add a few new formulae for consideration. The problem is, I doubt not, of infrequent occurrence. It never occurred to myself to want more than a look at the tables would furnish; but it may be suspected that, as the requirements of business become closer, inverse problems will acquire more importance than they now possess.