| 单词 | rational number |
| 释义 | rational number A number which can be expressed exactly as the ratio of two integers, that is, of two whole numbers: for example, 1.5 = 32. Many widely used numbers are not rational: for example, √2, π, and e, the base of natural logarithms. A non-rational or transcendental number cannot be evaluated exactly in any finite number of decimal places, or by recurring decimals. |
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