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Rationals

Rationals
represents the domain of rational numbers, as in xElementRationals.
  • xElementRationals evaluates immediately only if x is a numeric quantity.
  • Simplify[exprElementRationals] can be used to try to determine whether an expression corresponds to a rational number.
  • The domain of integers is taken to be a subset of the domain of rationals.
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Basic Examples   (3)
2/3 is a rational number:
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A sum of rational numbers is a rational number:
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Find rational solutions of an equation:
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