4.10.2 Numerators and Denominators for Rational Functions
If F is a variable holding a rational function, then F.Num and F.Den
are the numerator and denominator, respectively. The functions Num
and Den, respectively, return the same.
Example
F := x/(x+y);
F.Num;
x
-------------------------------
F.Den;
x+y
-------------------------------
Den(F);
x + y
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