| 再论一类数列的求和 |
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| 引用本文： | 魏孝章.再论一类数列的求和[J].陕西教育学院学报,2007,23(2):72-74. |
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| 作者姓名： | 魏孝章 |
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| 作者单位： | 陕西教育学院数理工程系,陕西西安,710061 |
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| 基金项目： | 陕西教育学院校科研和教改项目 |
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| 摘 要： | 在求某些离散型随机变量的数学期望时,我们会遇到一类数列的求和问题.将这类问题归纳、拓展为由两个等差数列对应项之积组成的数列的前n项的求和问题及两个等差数列、一个等比数列对应项之积组成的数列的求和问题.利用求和符号及初等数学方法得到这类问题的处理方法、结论及应用的实例.
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| 关 键 词： | 数列 求和 对应项之积 |
| 文章编号： | 1008-598X（2007）02-0072-03 |
| 修稿时间： | 2007-03-20 |
Rediscussion on the Summation of a Sequence of Number |
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| WEI Xiao-zhang.Rediscussion on the Summation of a Sequence of Number[J].Journal of Shaanxi Institute of Education,2007,23(2):72-74. |
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| Authors: | WEI Xiao-zhang |
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| Abstract: | This thesis paper is devoted to studies on the summation problem of the former terms in a sequence of numbers which is consisted of products of correspondence terms in two arithmetic progressions.It also discusses the summation problem involving a sequence of numbers which is composed of products of correspondence terms in two arithmetic progressions and one geometric series.For clarification,it also gives some applied examples. |
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| Keywords: | a sequence of numbers summation the product of correspondence terms |
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