“telescoping series”的概念、定义、翻译、参考文献-科学参考

单词	telescoping series
释义	telescoping series Mathematics A series {a_r} which can be expressed as a sum of differences of successive terms of another series {b_r}, i.e. that $a_{r} = b_{r} - b_{r - 1} so \sum_{r = a}^{n} a_{r} = b_{n} - b_{0} .$ , as all terms between the first and last cancel out. For example, if $a_{r} = \frac{1}{r (r + 1)} = \frac{1}{r} - \frac{1}{r + 1}, then \sum_{r = 1}^{n} a_{r} =$ $\sum_{r = 1}^{n} (\frac{1}{r} - \frac{1}{r + 1}) = 1 - \frac{1}{n + 1} = \frac{n}{n + 1} .$
随便看	network externality network file server Network File System network flow network flow problem network-former network front end Network Information Service network interconnection network interface card network layer network management network meltdown network modem network-modifier Network News Transfer Protocol network operating system network operations centre Network Operations Control Center network operations manager network scanning tool network service provider network share network society network synthesis

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