| 单词 | rational number |
| 释义 | rational number noun[C] mathematicsspecializeduk/ˌræʃ.ən.əl ˈnʌm.bər/us/ˌræʃ.ən.əl ˈnʌm.bɚ/usanumberthat can beexpressedas theratioof twowholenumbers （数学中的）有理数Compare irrational number Terms for numbers
rational number| American Dictionaryrational number noun[C] us/ˈræʃ·ə·nəl ˈnʌm·bər/mathematics a number that can beexpressedas theratio(=relationshipexpressedin numbersshowinghow muchbiggerone thing is than the other)of twowholenumbers Examplesofrational numberrational number We then completely describe the transformations having a givenrationalnumberexplicitly and count the number of periodic attractors. From theCambridge English Corpus More precisely, suppose that p/q is arationalnumber, and we search for a continued fraction representation for it. From theCambridge English Corpus We now show that this affine function can be replaced by a singlerationalnumberusing convex minimisation. From theCambridge English Corpus Such precise computation over the rationals is unnecessary because the resultingrationalnumberwill just be fed into compress, and a simplerrationalnumberfound. From theCambridge English Corpus In the following code, rat to stream builds the infinite sequence of digits for arationalnumbergiven by its numerator and denominator. From theCambridge English Corpus Now we distinguish two cases: (1) /2 is arationalnumber. From theCambridge English Corpus They would have to be eliminated in order to have arationalnumbersystem. From theCambridge English Corpus Each incommensurable magnitude of a geometrical figure is necessarily reduced to a convergentrationalnumberaccording to some set 'degree of precision' - digitization. From theCambridge English Corpus Evidently, every such fraction represents arationalnumber. From theCambridge English Corpus In fact, each time we evaluate polynomials at somerationalnumber, we are never interested in the exact value of the result, but only in its sign. From theCambridge English Corpus 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 arationalnumber. From theCambridge English Corpus This is because everyrationalnumberhas 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 arationalnumberwith 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 eachrationalnumberis 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 withrationalnumbercoefficients, 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.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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