We first introduce methods of finding the sum of the first n terms for an arithmetic sequence of higher order.
我们首先介绍了高阶等差数列前 n 项和的求解方法。
We first introduce three methods of finding the sum of the first n terms for an arithmetic sequence of higher order, and then display another method by some formal derivatives of which are defined.
首先，简要介绍了三种主要的求和方法。然后，根据高阶等差数列通项的特性，利用新定义的形式导数列对其进行了有效的探讨。
Course in Arithmetic by Jean-Pierre Serre reflects this usage, as do such phrases as first order arithmetic or arithmetical algebraic geometry.
教程算术的让皮埃尔塞尔反映了这种用法，因为这样的短语，一阶算术或算术代数几何。
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