FractionParts

Returns the numerator and denominator of a rational number written in its irreducible form.

Syntax

• FractionParts(r)

  • r is a rational number

Description

If r = p/q is a rational number with p and q > 0 relatively prime integers, then FractionParts(r) returns a structure of type RationalNumber with members numerator: p and denominator: q.

If x is a real number, an attempt is made to find a rational approximation of it. However, if you only need to see this approximation, it is better to obtain it as a rational number using the ToFraction function instead of obtaining it as a structure using FractionParts.

A structure of type RationalNumber can be converted to the corresponding rational number using the ToFraction function.

Examples

FractionParts(6.2256)

numerator: 3891

denominator: 625

FractionParts(π)

numerator: 2549491779

denominator: 811528438

ToFraction(ans)

2549491779/811528438	(=3.14159265359)

See also

• ToFraction