| 单词 | geometric series |
| 释义 | geometric series A series of numbers or terms in which the ratio of any term to the subsequent term is constant. For example, 1, 4, 16, 64, 256,… has a common ratio of 4. In general, a geometric series can be written: a + ar + ar2 … + arn-1 and the sum of n terms is: a(rn - 1)/(r - 1) |
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