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单词 series
释义 series
A sequence of terms each of which can be written in a form that is an algebraic function of its position in the series. For example, the exponential series 1 + x + x2/2! + x3/3! has an nth term xn/n!. The sum of all the terms from
n = 0 to n = ∞
is written:

This series has an infinite number of terms and is therefore called an infinite series . A finite series has a fixed number of terms. See also asymptotic series; convergent series
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更新时间:2026/2/11 14:47:42