
[数] 几何级数;[数] 等比级数
Population is increasing in that country in a geometric progression.
那个国家的人口正以几何级数增长。
With the advancement of our society and the development of science and research, knowledge has been in geometric progression growth.
随着人类社会的进步,科学文化事业的发展,人类的知识在按照等比级数增长着。
By means of trigonometrical progression method and the mainline track spectrum, the sample function of the Chinese mainline railway track random geometric irregularity is simulated.
根据我国干线铁路轨道谱,采用三角级数法模拟出干线铁路和准高速铁路轨道不平顺的样本函数;
Our energy requirements are going up in a geometric progression even faster than our population.
我们对能量的需求以几何级数增长,比我们的人口还要快。
With the rapid development of China's socio-economic, economic statistical data and statistical information grow by geometric progression.
和灭人邦社会经济的快快收铺,经济统计数据和统计信做量以几何级数迅猛删加。
Science technique in the world change with each passing day nowadays and the renewal of knowledge be surge with geometric progression.
当今世界科学技术日新月异,知识的更新以几何级数激增。
The geometric progression technique and three dimension arc length technique are combined to form a new method.
利用等比数列网格生成技术,三维弧长生成技术以及拼接技术生成计算网格。
In the network environment, the number of electronic information resources increase in a geometric progression.
在网络环境下,电子信息资源数量以几何数增加。
Partial geometric progression growth should be used in distributing the gearbox ratios.
采用偏置级数法来分配变速器各档速比。
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。
|geometric series/geometrical progression;几何级数;[数]等比级数
几何级数(Geometric Progression)是数学中一种重要的数列形式,其特点是每一项与前一项的比值恒定,称为“公比”。具体定义为:若数列 ( a_1, a_2, a3, ldots ) 满足 ( frac{a{n+1}}{a_n} = r )(( r ) 为常数,且 ( r eq 0 )),则该数列为几何级数。
几何级数(Geometric Progression),又称等比数列,是数学中一种常见数列形式,其核心特征为每一项与前一项的比值恒等于一个固定常数(称为公比)。以下是详细解释:
基本结构
几何级数可表示为:
$$a, , ar, , ar, , ar, , dots$$
其中:
通项公式
第 (n) 项((n geq 1))的计算式为:
$$a_n = ar^{n-1}$$
求和公式
公比影响:
与算术级数对比:
算术级数(等差数列)的相邻项差为常数,而几何级数的相邻项比为常数。
如需进一步了解特定场景或复杂变形,可参考数学教材或在线学习平台中的级数专题。
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