Introduction - If you have any usage issues, please Google them yourself
From the census statistics, a country known to the mother s age newborn cumulative distribution for N = N (t), one of t for the age of the mother, N for the newborn s mother, age less than or equal to t the number of newborns. The following table gives the distance of 5 data. t 15 20 25 30 35 40 45 50N 0 7442 26703 41635 49785 50209 50226 50230 check the boundary conditions for the N (15) = N (50) = 0, using cubic spline interpolation is obtained between the ages of 15-50, each age (that is, x = 15,16, ... ..., 50) corresponding to the number of newborns accumulated N, and mapped graphics interpolation function.