基本释义:

n项和

网络释义

1)sum to n terms,n项和

2)sum of the first N terms,前n项和

3)n term sum,n项和数

4)the sum of the first n item,前n项和式

5)former n one and S_ns,前 n 项和 s_n

6)sum formulas,n项和公式

用法和例句

It is easy to seek the sum of the first N terms of arithmetic and geometric series but hard to get that of general ordered series .

等差、等比数列的前n项和易求,而一般数列的前n项和是不太容易求的,本文介绍利用微积分知识求数列的前n项和公式的一些方法,并给出一些结论。

This note provides the sum formulas for generaliazed h-Fibonacci sequences and its equal length sub-sequences.

广义h-Fibonacci数列及其等距子列的连续n项和公式,并对公式进行了证明。

Sum of Generalized h-Fibonacci Sequences

广义h-Fibonacci数列的连续n项和公式

Improving the Sum Formula of Equal Length Generalized Fibonacci Sub-sequence

对广义Fibonacci等距子列连续n项和公式的改进

On Open Items of a_ns and Former n Ones and S_ns of K Steps Serveral of Equal Difference;

关于 k 阶等差数列通项 a_n 及前 n 项和 S_n 的讨论

Add &New Project...

添加新项目(&N)...

The Transference Form Designs for the Summary of the First "n" Items in the Arithmetic Progression;

“等差数列前n项求和”教学的迁移式设计

Three Methods to Derive the Formula for the Sum of the K power of Positive N Term Integer;

导出正整数前n项k方和公式的三种方法

On the mean values of SSSP(n) and SISP(n)

关于SSSP(n)和SISP(n)的均值

n-Homomorphisms, Mappings Preserving n-Zero Products and Local n-Isomorphisms;

n-同态，保n-零积映射和局部n-同构

Properties of m-Term Algebraic Sum of Image Set of N-Parameter d-Dimension Generalized Wiener Process;

N指标d维广义Wiener过程象集的m项代数和的性质

Progresses on Synthesis of N-methylaniline and N,N-dimethylaniline

N-甲基苯胺和N,N-二甲基苯胺合成研究进展

n-adic Boolean operation

对n和只有n个操作数的布尔运算

Comparative Study on "Hen+N" and "Hen+You+N";

“很+N”和“很+有+N”的比较研究

The Methods and Techniques of limn→∞n～(1/n)=1;

limn→∞n～(1/n)=1的证明方法和技巧

The Grammatical Study on V+(P+N) and (V+P)+N ;

“V+(P+N)”和“(V+P)+N”的语法研究

On “Zheng(ge)+N”and “Quan+N”from Cognitive Perspective;

从认知视角看“整(个)+N”和“全+N”

ON THE EDGE CHROMATIC NUMBER AND EQUITABLE CHROMATIC NUMBER OF S_m ∨ K_(n,n);

S_m ∨ K_(n,n)的边色数和均匀全色数

N-semisimple rings,Noether N-semisimple rings and some special rings;

N-半单环、Noether N-半单环和几类特殊环

Determination of Ammoniacal Nitrogen and Nitric Nitrogen on Soilless Culture;

无土栽培中NH_4~+—N和NO_3~-—N的测定