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What (who) is irrational number - definition
Irrational number
.svg?width=200 "Set of real numbers (R), which include the rationals (Q), which include the integers (Z), which include the natural numbers (N). The real numbers also include the irrationals (R\Q).")
REAL NUMBER THAT CANNOT BE EXPRESSED AS A RATIO OF INTEGERS
Irrational numbers; Irrational Numbers; Irrational.number; Irrational Number; Irrationals; Incommensurable magnitudes; History of irrational numbers; First Crisis of Mathematics
In mathematics, the irrational numbers (from in- prefix assimilated to ir- (negative prefix, privative) + rational) are all the real numbers that are not rational numbers. That is, irrational numbers cannot be expressed as the ratio of two integers.
irrational number
REAL NUMBER THAT CANNOT BE EXPRESSED AS A RATIO OF INTEGERS
Irrational numbers; Irrational Numbers; Irrational.number; Irrational Number; Irrationals; Incommensurable magnitudes; History of irrational numbers; First Crisis of Mathematics
<mathematics> A real number which is not a {rational
number}, i.e. it is not the ratio of two integers.
The decimal expansion of an irrational is infinite but does
not end in an infinite repeating sequence of digits.
Examples of irrational numbers are pi, e and the square
root of two.
(1995-04-12)
Quadratic irrational number
MATHEMATICAL CONCEPT
Quadratic surd; Quadratic irrationality; Quadratic Irrational Number; Quadratic irrationalities; Quadratic irrational; Quadratic irrational numbers
In mathematics, a quadratic irrational number (also known as a quadratic irrational, a quadratic irrationality or quadratic surd) is an irrational number that is the solution to some quadratic equation with rational coefficients which is irreducible over the rational numbers.Jörn Steuding, Diophantine Analysis, (2005), Chapman & Hall, p.
Examples of use of irrational number
1. Sometimes they strike gold; but, even if they come away empty–handed, the experience of just sizing up and calibrating what‘s on offer seems reason enough to have invested an irrational number of hours.