# FractionalPart Function

From GeoGebra Manual

(Redirected from FractionalPart Command)

- fractionalPart( <Expression> )
- Returns the fractional part of the expression.

**Examples:**

`fractionalPart( 6 / 5 )`

yields \frac{1}{5} in*CAS View*, 0.2 in*Algebra View*.`fractionalPart( 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)`