FractionalPart Function
From GeoGebra Manual
Revision as of 10:43, 5 August 2015 by Markus.winkler (talk | contribs)
- fractionalPart( <Expression> )
- Returns the fractional part of the expression.
Examples:
fractionalPart( 6 / 5 )
yields \frac{1}{5} in CAS View, 0.2 in Algebra ViewfractionalPart( 1/5 + 3/2 + 2 )
yields \frac{7}{10} in CAS View, 0.7 in Algebra View
Note:
In Mathematics fractional part function is defined sometimes as
- x-\lfloor x\rfloor
In other cases as
- sgn(x)(\mid x\mid-\lfloor \mid x\mid\rfloor) .
GeoGebra uses the second definition (also used by Mathematica).
To obtain the first function you may use f(x) = x - floor(x)