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3.2.3. Numerators and Denominators for Rational Numbers
If F is a variable holding a fraction, then F.Num and F.Den are the
numerator and denominator, respectively.  The functions 'Num' and
'Den', respectively, return the same.

Example

F := 3/5;
F.Num;
3
-------------------------------
F.Den;
5
-------------------------------
Den(F);
5
-------------------------------
1.75;
7/4
-------------------------------
It.Num;
7
-------------------------------
See also: