期刊名称：Journal of Interpolation and Approximation in Scientific Computing
印刷版ISSN：2194-3907
电子版ISSN：2194-3907
出版年度：2016
卷号：2016
页码：14-18
DOI：10.5899/2016/jiasc-00101
出版社：ISPACS GmbH
摘要：In this paper, the mean rate of change and its change in mixture and generalized mixture dynamical exponential population growth model was obtained. The nonnegative derivatives shows that mean rate of change is always increasing, unless the rate of each subpopulation are all the same. In which case the variance is zero, the derivative is zero, and mean rate is constant.
