## Makeham Curve

The function defined by

which is used in actuarial science for specifying a simplified mortality law. Using as the probability that a newborn will achieve age , the Makeham law (1860) uses

for , , , .

Makeham, W. M. On the Law of Mortality, and the Construction of Annuity Tables.'' J. Inst. Actuaries and Assur. Mag. 8, 301-310, 1860.