时间序列分析是统计学的分支之一，它的研究对象是离散有序数列的变化特征和变化趋势。
As one of the branches of statistics, time series analysis focuses on the variation characters and trend of discrete ordered data series mainly.
并研究了付款额呈高阶等差数列及倒虹式年金等某些特殊的年金变化形式，给出了其期初值和期末值。
Some special patterns of annuity changes whose payments are of the arithmetic progression of higher order or of the reverse rainbow are studied, and their beginning values and ending values are given.
给出了单偶数阶和双偶数阶非等比数列乘幻方的构造方法，把乘幻方的研究从等比数列推广到了非等比数列；探讨了以任给自然数N为偶阶乘幻方值构造非等比数列乘幻方。
It initia1ly probes whether any natural number N can be used as a mumerical value of even order multiplier magic square to construct a multiplier magic square of non-geometric progression.
给出了单偶数阶和双偶数阶非等比数列乘幻方的构造方法，把乘幻方的研究从等比数列推广到了非等比数列；探讨了以任给自然数N为偶阶乘幻方值构造非等比数列乘幻方。
It initia1ly probes whether any natural number N can be used as a mumerical value of even order multiplier magic square to construct a multiplier magic square of non-geometric progression.
应用推荐