| 词汇 | rational-number |
| 释义 | rational number noun[ C ] mathematics specializeduk /ˌræʃ.ən.əl ˈnʌm.bər/ us /ˌræʃ.ən.əl ˈnʌm.bɚ/us a number that can be expressed as the ratio of two whole numbers（数学中的）有理数 Compare irrational number Terms for numbers -handed additive inverse aliquot common denominator common factor common multiple exponent fold fortyfold fourfold GCF hundredfold reciprocal recurring recurring number remainder response variable twentyfold twofold weighting rational number | American Dictionaryrational number noun[ C ] us/ˈræʃ·ə·nəl ˈnʌm·bər/ mathematics a number that can be expressed as the ratio (= relationship expressed in numbers showing how much bigger one thing is than the other) of two whole numbers Examples of rational numberrational number We then completely describe the transformations having a given rationalnumber explicitly and count the number of periodic attractors. More precisely, suppose that p/q is a rationalnumber, and we search for a continued fraction representation for it. We now show that this affine function can be replaced by a single rationalnumber using convex minimisation. Such precise computation over the rationals is unnecessary because the resulting rationalnumber will just be fed into compress, and a simpler rationalnumber found. In the following code, rat to stream builds the infinite sequence of digits for a rationalnumber given by its numerator and denominator. Now we distinguish two cases: (1) /2 is a rationalnumber. They would have to be eliminated in order to have a rationalnumber system. Each incommensurable magnitude of a geometrical figure is necessarily reduced to a convergent rationalnumber according to some set 'degree of precision' - digitization. Evidently, every such fraction represents a rationalnumber. In fact, each time we evaluate polynomials at some rationalnumber, we are never interested in the exact value of the result, but only in its sign. We are thinking, for instance, of the sequences of rational numbers converging towards an irrational, for example, 2: this theoretical limit produces 2, which is not a rationalnumber. This is because every rationalnumber has a recurring decimal expansion. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. In fact, they are only defined when the exponent is a rationalnumber with the denominator being an odd integer. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. All the rational numbers are equivalent, because each rationalnumber is equivalent to zero. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. In both cases, for input systems with rationalnumber coefficients, routines for isolating the real solutions are available. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. See all examples of rational number These examples are from corpora and from sources on the web. Any opinions in the examples do not represent the opinion of the Cambridge Dictionary editors or of Cambridge University Press or its licensors. |
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